Guides
Guides and comparisons
Concise answers first, then the explanation, with manufacturer figures cited. Written to help you decide, not to sell.
Guides
Condensing Gas Boiler Buying Guide for BC Homes
How to choose a condensing gas boiler for a home in British Columbia: efficiency, sizing, heating-only versus combi, venting, hot water, and the installation factors that change the price.
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Combi boiler vs heating-only boiler with a tank
How to choose between a combi boiler that heats domestic water on demand and a heating-only boiler paired with an indirect storage tank, based on hot-water demand, space, and how the two behave under simultaneous draws.
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Boiler sizing for Vancouver homes: heat-loss calculations
How boiler size is decided for a Greater Vancouver home: what a heat-loss calculation measures, how the coastal design temperature and local housing stock change the result, how input, output and AFUE relate, why rules of thumb oversize, and how the hot-water side is sized separately.
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Repair or replace your boiler: a decision framework
A practical framework for the repair-versus-replacement decision: what kind of faults justify repair, when age and parts availability tip the scale, and how to compare both options fairly and in writing.
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Boiler venting explained (categories, materials, clearances)
How boiler venting works in Canada: what Category I–IV means, why condensing boilers use certified plastic pipe under ULC S636, and how clearances, terminal locations and maximum vent lengths constrain an installation.
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Indirect water tank vs tankless water heater
How an indirect tank heated by the boiler compares with a condensing tankless water heater: stored reserve versus on-demand delivery, space, recovery behaviour, and the households each arrangement fits.
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Strata boiler plant replacement: a council's guide
How a strata council should approach a boiler plant replacement: the players and their roles, the decision and funding process, Technical Safety BC requirements for gas and classified plants, and the engineering questions that set a defensible scope.
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Propane boilers in BC: what to know
What BC homeowners should know before buying a propane boiler: how propane differs from natural gas as a delivered fuel, storage and delivery arrangements, conversion and dual-fuel appliances, and the permitting that applies to any gas installation.
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Annual boiler maintenance checklist
What annual boiler maintenance involves in BC: the professional service scope, the safe homeowner checks between services, the red flags that need a technician, and why the service record protects both safety and the warranty.
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Boiler error codes: what they mean and what to do
How to read boiler error codes: the text, numeric and grouped formats used by IBC, Navien, NTI and Viessmann controllers, a worked example of decoding a code, blocking versus lockout messages, which codes need action now, how to record a code for a technician, why a code is not a diagnosis, safe first steps, and where to look a code up.
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IBC V-10 controller: reading alerts and menu codes
How to read the IBC V-10 touchscreen controller on SL Series G3 and VX boilers: text alerts, warnings and informational messages, what each class means, and how the SFC and SFT numeric-display appliances differ with their F-codes.
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Navien E-codes: generations and how to read them
How Navien E-codes work across the series and generations documented on this site: NCB-H, NFC-H, NFB-H and NHB-H line-ups, the discontinued NCB-E generation, why identical numerals differ between tables, and the safe way to read and report a code.
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NTI group fault codes (1 01–7 99) explained
How to read the grouped fault codes on NTI FTVN, TRX and Compass controls: what the leading group and member numbers mean, blocking versus warning rows, the P-letter and text codes, and how TFTN, Lx and FTG print their codes differently.
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Viessmann fault codes: F.x, HEX and UBA3 displays
How Viessmann fault codes are displayed across the controls documented on this site: F.x codes on the Vitodens 100-W and 200-W, two-character codes on the 200-W B2HA and Vitocrossal 300 CU3A, and the UBA3 LED display of the Buderus GB162.
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Boiler vs furnace for a BC home
How a gas boiler and a gas furnace differ in a BC home: water versus air as the heat carrier, radiators and in-floor loops versus ducts, room-by-room comfort, and why the existing distribution system usually decides which one you should own.
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Boiler vs heat pump: honest comparisons for BC
An honest boiler-versus-heat-pump comparison for BC homes: how each delivers heat, the role of ducts and hydronic emitters, cooling, and why the existing distribution system and the building envelope decide more than the technology label.
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Indirect water tank sizing
How to size an indirect water tank for a boiler-heated home: the demand to measure, the difference between stored reserve and recovery, why the boiler's output is part of the tank's size, and how on-demand combi delivery compares.
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Boiler lifespan and how maintenance changes it
How long a gas boiler lasts and what determines it: why age alone is a poor measure, how servicing, water quality, sizing and repair habits change the trajectory, which parts usually reach the end of their life first, the signs a boiler is nearing replacement, and the evidence a homeowner should track from one service to the next.
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Carbon monoxide alarms in BC boiler homes
Carbon monoxide alarms for BC homes with gas boilers: why a boiler home needs them, where they belong, how to test and maintain them, and the leave-and-call response when one sounds.
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Combi boilers for townhouses and suites
What to consider when a combi boiler heats a townhouse, condo or suite: space and venting advantages in compact attached homes, the on-demand hot-water limits that decide the model, and the installation, condensate and strata realities.
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In-floor radiant heating with a boiler
How in-floor radiant heating works with a gas boiler: the low-temperature operating regime, why it suits condensing boilers, the system components between boiler and floor, and how the boiler is sized and controlled for it.
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Boiler and gas permits in BC
The permitting path for boiler work in BC: when Technical Safety BC requires a gas permit and inspection, who may hold a homeowner gas permit, where municipalities add permits, and how boiler-plant classification changes the paperwork for larger systems.
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Boiler noises: what each sound tends to mean
What pinging, rumbling, banging and gurgling boiler noises tend to mean, why sound alone cannot diagnose them, the safe checks a homeowner can make, and when a noise is a service call rather than a curiosity.
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Emergency shut-offs: gas, water and power
How to identify, label and understand the shut-offs around a gas boiler: the service switch, the water and fill valves, and the gas valves, with the rule that operating gas valves is not a homeowner task and emergencies are leave-and-call events.
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Hydronic system flushing and inhibitor
Why hydronic systems are flushed and treated: what sludge, scale and corrosion do inside the loop, what a flush and inhibitor treatment involve, when they are recommended, and why water quality protects the heat exchanger and the warranty.
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Pre-season boiler checklist for homeowners
The pre-season boiler checklist for BC homeowners: what to book, what to test, what to inspect and what to watch, so the first cold snap finds the boiler serviced, the alarms working and the vents clear.
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Boiler not heating upstairs: why the upper floor stays cold
Why a gas boiler can heat the ground floor and leave the upstairs cold: hydronic zoning, radiator balancing, thermostatic and zone valves, trapped air at the highest emitters, circulator performance, and the checks a homeowner can make before calling ROMA Heating & Cooling in Greater Vancouver.
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Hydronic heating system design in Vancouver
How a hydronic heating system is designed for a Greater Vancouver home: room-by-room heat loss, emitter and water-temperature selection, piping, pumping and balancing, zoning and controls, boiler selection, and the permits and commissioning that finish the job.
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Weil-McLain boiler serial numbers: where to find them and what they mean
How Weil-McLain's CP number works: where the number sits on the boiler, how the CP plus seven-digit format reads, what the CP Lookup tool returns, how the 1988–2026 CP Date Ranges chart estimates age, and what to do when the number cannot be found.
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NTI boiler serial numbers: where to find them and what they mean
How NTI documents its boiler serial numbers: the silver rating plate location, the month/day/year character positions on 2019-and-up boilers, the year and day-of-year codes used on other formats, the Trin & Stor and pre-2010 year codes, and why the TX/FTV/TFT/LX/FTG families require a call.
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Triangle Tube boiler serial numbers: where to find them and what they mean
How Triangle Tube documents its boiler serial numbers: the per-model Serial Number Locator with the format of each Prestige, Instinct, Challenger, Marquis and Keystone serial, the recall prefixes and manufacture window, and how the serial revision letter is used to pick the right Instinct documentation.
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Bradford White serial numbers: where to find them and what they mean
How Bradford White documents its serial number date code: the rating plate location with model and serial fields, the first-two-character year and month code, the change from seven to eight production digits in December 2007, and the official lookup and support routes.
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Viessmann boiler serial numbers: where to find them and what they mean
How Viessmann documents its boiler serial numbers: the 16-digit numeric format, the official lookup tool that maps the first seven digits to a model, the per-model Serial Number Locator, the second 12-digit ASME/NB serial on the plate, and how technicians use both numbers.
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Navien boiler serial numbers: where to find them and what they mean
How Navien documents its boiler serial numbers: the rating plate on the side of the boiler, the 15 to 16 character serial and the official registration lookup, the historical Navien Code with its embedded product date, and the support route for the manufacture date on current boilers.
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FortisBC Connect to Gas: natural gas boiler and combination boiler rebates
How FortisBC's Connect to Gas space and water heating rebates work for a boiler conversion: what is covered, who qualifies as a new gas customer converting from oil or propane, how to apply, the documents the application needs, and how the rebate fits a boiler replacement project in Greater Vancouver.
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FortisBC Gas boiler rebate for commercial and industrial process heat
Who qualifies for FortisBC's commercial and industrial gas boiler rebate, what the $9-per-MBH payment up to $45,000 requires, which boiler uses are excluded, how to apply and what documents the application needs.
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FortisBC heating system optimization rebates for existing gas boilers
The FortisBC rebates available for optimizing existing commercial gas boilers: measure-by-measure amounts for small, medium and large boilers, tune-up rates, eligibility rules, application steps and the documents the application needs.
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CleanBC Better Homes Home Renovation Rebate Program and a boiler replacement
What the CleanBC Better Homes Home Renovation Rebate Program covers, who qualifies, how to apply and what documents are needed, and exactly how it interacts with a gas boiler replacement in Greater Vancouver, including the northern conversion rebates and the fossil fuel removal requirement.
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CleanBC Better Homes Energy Savings Program: income-qualified rebates when replacing gas heating
How the CleanBC Better Homes Energy Savings Program works for income-qualified households replacing gas heating: income levels, rebate amounts for heat pumps and heat pump water heaters, pre-registration, the registered contractor process, required documents and the rules that apply when a gas boiler or combination boiler is removed.
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Canada Greener Homes Affordability Program in B.C.: free upgrades through ECAP
How the federal Canada Greener Homes Affordability Program reaches B.C. households through ECAP: who qualifies, the income limits, what upgrades can be installed at no cost, how to apply and what documents are needed, and how the program interacts with a gas boiler replacement.
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High-efficiency boiler upgrade rebates in BC: what actually applies
A homeowner's guide to boiler upgrade rebates in British Columbia: which programs pay and which do not, how the FortisBC Connect to Gas conversion rebate works, what CleanBC Better Homes covers instead of a gas boiler, the income-qualified programs, and how to confirm eligibility before any equipment is purchased.
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Gas boiler replacement in Vancouver: permits, inspection and what to expect
How a gas boiler replacement is permitted and inspected in Vancouver: the city gas and mechanical permits, who pulls them, the inspection path, the step-by-step project sequence, how the replacement is sized with a heat-loss calculation rather than the old boiler's rating, what upgrading a conventional system to a condensing boiler changes, how older hydronic distribution is handled, and what Vancouver's housing stock means for the boiler you choose.
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Gas boiler replacement in Burnaby: permits, inspection and what to expect
The permit and inspection path for a gas boiler replacement in Burnaby: the city gas permit, who applies, how inspections are booked, the replacement sequence, how the replacement is sized, how the hot-water strategy is chosen between a heating-only boiler, a combi and a tankless coil, what sealed combustion means in a tighter home, and what Burnaby's bungalows, towers and townhouses mean for boiler choice.
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Gas boiler replacement in Richmond: permits, inspection and what to expect
How a gas boiler replacement is permitted and inspected in Richmond: the city gas permit and forms, who applies, how inspections are scheduled, the replacement sequence, what shapes a written estimate, the questions to ask before approving a quote, and what Richmond's houses, townhouses and towers mean for boiler choice.
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Gas boiler replacement in Surrey: permits, inspection and what to expect
How a gas boiler replacement is permitted and inspected in Surrey: the Technical Safety BC gas permit, Surrey's plumbing permit for the heating side, how inspections are requested, the project sequence, what shapes a written estimate, how a like-for-like swap differs from a system upgrade, and what Surrey's housing mix means for boiler choice.
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Gas boiler replacement in Coquitlam: permits, inspection and what to expect
How a gas boiler replacement is permitted and inspected in Coquitlam: the Technical Safety BC gas permit, the city's building and plumbing permits including hydronic design submissions, the inspection path, the project sequence, and Coquitlam's housing mix.
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Gas boiler replacement in North Vancouver: permits, inspection and what to expect
How a gas boiler replacement is permitted and inspected in the City of North Vancouver: the city gas and plumbing permits, the gas declaration and hydronic balancing report, who applies, the inspection path, and the project sequence.
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Gas boiler replacement in West Vancouver: permits, inspection and what to expect
How a gas boiler replacement is permitted and inspected in West Vancouver: the Technical Safety BC gas permit, the District's mechanical permit for the hot-water heating side, the business licence requirement, the project sequence, and what West Vancouver's housing stock means for boiler choice.
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Gas boiler replacement in New Westminster: permits, inspection and what to expect
How a gas boiler replacement is permitted and inspected in New Westminster: the city hydronic heating permit and its designer-sealed documents, the Technical Safety BC gas permit, the required inspections, and the project sequence for the city's older housing stock.
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Gas boiler replacement in Port Coquitlam: permits, inspection and what to expect
How a gas boiler replacement is permitted and inspected in Port Coquitlam: the city building and plumbing permits, the Technical Safety BC gas permit, what the plumbing permit covers and exempts, the project sequence, and the city's housing mix.
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Gas boiler replacement in Port Moody: permits, inspection and what to expect
How a gas boiler replacement is permitted and inspected in Port Moody: the city hydronic heating permit, the Technical Safety BC gas permit, how inspections are booked, the project sequence, and what Port Moody's housing mix means for boiler choice.
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Gas boiler replacement in Delta: permits, inspection and what to expect
How a gas boiler replacement is permitted and inspected in Delta: the Technical Safety BC gas permit and Delta's proof-of-permit rule, the city's building and plumbing permits, the inspection process, and what Delta's housing mix means for boiler choice.
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Gas boiler replacement in Langley: permits, inspection and what to expect
How a gas boiler replacement is permitted and inspected in Langley: the Technical Safety BC gas permit, the Township's plumbing, sprinkler and residential permit streams, the inspection path, the project sequence, and Langley's housing mix.
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Gas boiler replacement in Maple Ridge: permits, inspection and what to expect
How a gas boiler replacement is permitted and inspected in Maple Ridge: the city gas permit, the plumbing permit and hydronic calculations, the inspection and occupancy requirements, the project sequence, and the city's housing mix.
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Gas boiler replacement in White Rock: permits, inspection and what to expect
How a gas boiler replacement is permitted and inspected in White Rock: the Technical Safety BC gas permit, the city plumbing permit for radiant heating, the business licence rule, the inspection path, and what White Rock's compact seaside housing means for boiler choice.
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Gas boiler replacement in Pitt Meadows: permits, inspection and what to expect
How a gas boiler replacement is permitted and inspected in Pitt Meadows: the Technical Safety BC gas permit, the city building and plumbing permit rules, the inspection path, the project sequence, and what the city's housing mix means for boiler choice.
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Gas boiler replacement in Tsawwassen: permits, inspection and what to expect
How a gas boiler replacement is permitted and inspected in Tsawwassen: the Technical Safety BC gas permit, Delta's proof-of-permit requirement at framing, the city plumbing permit for the heating side, and what the community's beachside housing means for boiler choice.
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Gas boiler replacement in Anmore: permits, inspection and what to expect
How a gas boiler replacement is permitted and inspected in Anmore: the Village building permit for mechanical equipment, the Technical Safety BC gas permit, the inspection path, the project sequence, and what Anmore's single-family village setting means for boiler choice.
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Gas boiler replacement in Belcarra: permits, inspection and what to expect
How a gas boiler replacement is permitted and inspected in Belcarra: the Technical Safety BC gas permit, what the Village's building bylaw does and does not cover, the fee schedule for gas heating devices and boiler vents, and the project sequence for the village's single-family homes.
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Gas boiler replacement on Bowen Island: permits, inspection and what to expect
How a gas boiler replacement is permitted and inspected on Bowen Island: the Technical Safety BC gas permit, the Municipality's building permit and inspection process, the occupancy certificate, and what island access and housing mean for a boiler project.
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Gas boiler replacement in Abbotsford: permits, inspection and what to expect
How a gas boiler replacement is permitted and inspected in Abbotsford: the Technical Safety BC gas permit, the City's building-permit categories and inspection process, the project sequence, and what Abbotsford's Fraser Valley housing mix means for boiler choice.
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Gas boiler replacement in Chilliwack: permits, inspection and what to expect
How a gas boiler replacement is permitted and inspected in Chilliwack: the Technical Safety BC gas permit, the City's building-permit and inspection process, the project sequence, and what Chilliwack's fast-growing housing mix means for boiler choice.
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Gas boiler replacement in Mission: permits, inspection and what to expect
How a gas boiler replacement is permitted and inspected in Mission: the Technical Safety BC gas permit, the City's building-permit scope and inspection stages, the project sequence, and what Mission's river, hillside and rural housing means for boiler choice.
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Gas boiler replacement in Lions Bay: permits, inspection and what to expect
How a gas boiler replacement is permitted and inspected in Lions Bay: the Village building permit and heating-system bylaws, the Technical Safety BC gas permit, the inspection policy, and what the village's steep coastal lots mean for boiler work.
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Gas boiler repair in Vancouver: diagnosis, permits and what to expect
How gas boiler repair works in Vancouver: the faults found in the city's radiators, combination boilers and central plants, why testing comes before replacing, how a fault is isolated between the boiler, the emitters and the controls, what the technician's readings mean, where the city's permit boundary sits, safe homeowner checks, and how ROMA Heating & Cooling handles repair calls.
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Gas boiler repair in Burnaby: permits, diagnosis and what to expect
How gas boiler repair works in Burnaby: the city's gas permit program, the faults found in bungalows, townhouses and tower central plants, why diagnosis precedes replacing, how a tower plant repair is planned and permitted, what servicing and records prevent a repeat call, safe homeowner checks, and how ROMA Heating & Cooling handles repair and emergency calls.
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Gas boiler repair in Surrey: permits, diagnosis and what to expect
How gas boiler repair works in Surrey: the split between provincial gas regulation and the city's plumbing program, the faults found in detached homes, townhouses and Surrey Centre towers, why diagnosis precedes replacing, how a fault is isolated between the boiler, the emitters and the controls, what the technician's readings prove, the servicing and records that prevent a repeat call, safe homeowner checks, carbon monoxide safety, when a fault becomes an emergency, how a repair is quoted, and how ROMA handles repair calls.
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Gas boiler repair in Richmond: permits, diagnosis and what to expect
How gas boiler repair works in Richmond, BC: the City of Richmond gas permit and forms, the boundary between city and Technical Safety BC, how a fault is isolated between the boiler, the emitters and the controls, what the technician's readings prove, the faults found in detached homes, townhouses and tower plants, why diagnosis precedes replacing, safe homeowner checks, how a repair is quoted, when a fault becomes an emergency, carbon monoxide safety, the annual gas-appliance duty for rental and strata properties, and how ROMA Heating & Cooling handles repair calls.
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Gas boiler repair in Delta: permits, diagnosis and what to expect
How gas boiler repair works in Delta: the city's building and plumbing permit boundaries, the Technical Safety BC gas rule, the faults found in Ladner, North Delta and Tsawwassen homes, why diagnosis precedes parts, safe homeowner checks, how a repair is quoted, when a fault becomes an emergency, and how ROMA Heating & Cooling handles repair calls.
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Gas boiler repair in Maple Ridge: permits, diagnosis and what to expect
How gas boiler repair works in Maple Ridge: the city's own gas permit and when it reaches repairs, the plumbing and home-improvement permit streams, the faults found in Albion, Silver Valley and older core homes, why diagnosis precedes parts, safe homeowner checks, and ROMA's repair process.
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Gas boiler repair in Port Coquitlam: permits, diagnosis and what to expect
How gas boiler repair works in Port Coquitlam: the city's building and plumbing permit boundaries, the Technical Safety BC gas rule, the faults found in Citadel Heights, Lincoln Park and the city's suburban stock, how a fault is isolated between the boiler, the emitters and the controls, why diagnosis precedes parts, how to verify a licensed gas contractor, safe homeowner checks, how a repair is quoted, when a fault becomes an emergency, and how ROMA handles repair calls.
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Gas boiler repair in Coquitlam: permits, diagnosis and what to expect
How gas boiler repair works in Coquitlam: the Technical Safety BC gas rule and the city's building and plumbing boundaries, the faults found in Maillardville, Austin Heights, Westwood Plateau and Burke Mountain homes, how a fault is isolated between the boiler, the emitters and the controls, why diagnosis precedes parts, safe homeowner checks, how a repair is quoted, how to verify a licensed contractor, when a fault becomes an emergency, carbon monoxide safety, the annual gas-appliance duty for rental and strata properties, and how ROMA Heating & Cooling handles repair calls.
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Gas boiler repair in North Vancouver: permits, diagnosis and what to expect
How gas boiler repair works in the City of North Vancouver: the city gas permit and plumbing program, the Gas, Piping & Appliance Declaration and hydronic balancing report, the boundary with Technical Safety BC, the faults found in Lonsdale, the shipyards and hillside homes, how a fault is isolated between the boiler, the emitters and the controls, safe homeowner checks, how a repair is quoted, how to verify a licensed contractor, when a fault becomes an emergency, and how ROMA Heating & Cooling handles repair calls.
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Gas boiler repair in West Vancouver: permits, diagnosis and what to expect
How gas boiler repair works in the District of West Vancouver: the provincial gas permit and the District's mechanical permit, the faults found in hillside homes and older hydronic systems, how a fault is isolated between the boiler, the emitters and the controls, what the technician's readings mean, safe homeowner checks, carbon monoxide safety, the annual gas-appliance duty for rental suites and strata, how a repair is quoted, when a fault becomes an emergency, repair versus replacement, and how ROMA Heating & Cooling handles repair calls.
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Gas boiler repair in New Westminster: permits, diagnosis and what to expect
How gas boiler repair works in New Westminster: the city's hydronic heating permit and its repair and maintenance exemptions, the boundary with Technical Safety BC on the gas side, the faults found in the city's older hydronic systems and waterfront buildings, how a fault is isolated between the boiler, the emitters and the controls, safe homeowner checks, carbon monoxide safety, the annual gas-appliance duty for rental suites and strata, how a repair is quoted, when a fault becomes an emergency, repair versus replacement, and how ROMA Heating & Cooling handles repair calls.
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Gas boiler installation in Vancouver: permits, design and what to expect
How a new gas boiler installation works in Vancouver: what the project includes, the City of Vancouver gas and mechanical permits, heat-loss sizing and hydronic design, matching the boiler to the emitters, controls and hot-water load, venting, condensate and gas-supply planning, the installation mistakes that show up later, preparing the home for installation day, carbon monoxide safety, what a written estimate should itemise, commissioning, and what Vancouver's housing stock means for the boiler you choose.
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Gas boiler installation in Burnaby: permits, design and what to expect
How a new gas boiler installation works in Burnaby: the city's gas, heating-system and hydronic permits, how the permit is applied for and closed out, heat-loss sizing and system design, venting, condensate and gas-supply planning, what a strata or plant-scale installation changes, what the handover should include, preparing the home for installation day, replacing an atmospheric boiler with a condensing unit, commissioning, and what Burnaby's bungalows, townhouses and tower plants mean for the boiler you choose.
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Gas boiler installation in Surrey: permits, design and what to expect
How a new gas boiler installation works in Surrey: the Technical Safety BC gas permit and the city's plumbing permit for the hydronic side, how the permit is applied for, notified and closed out, who can hold a homeowner permit, heat-loss sizing and system design, matching the boiler to the emitters, controls and hot-water load, venting, condensate and gas-supply planning, the installation mistakes that show up later, commissioning, handover, annual servicing, and what Surrey's detached homes, townhouses and towers mean for the boiler you choose.
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Gas boiler installation in Richmond: permits, design and what to expect
How a new gas boiler installation works in Richmond, BC: what the project includes, the City of Richmond gas and plumbing permits and forms, heat-loss sizing and hydronic design, venting, condensate and gas-supply planning, preparing the home for installation day, the installation mistakes that show up later, commissioning, and what Richmond's detached homes, townhouses and tower plants mean for the boiler you choose.
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Emergency boiler repair in Vancouver: what to do when the heat stops
What to do when a Vancouver boiler fails: how to separate a gas or carbon-monoxide emergency from a no-heat breakdown, the warning signs that point to a brewing combustion problem, the safe steps to take while you wait, the faults behind a cold house, how a priority visit works, the permit boundary for a repair versus a replacement, and how annual servicing prevents the next emergency.
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Combi boiler installation in Vancouver: permits, sizing and what to expect
How a combi boiler installation works in Vancouver: what the appliance does, the City of Vancouver gas and mechanical permits, heat-loss and hot-water sizing, where combis fit in the city's housing, venting and condensate planning, the installation sequence, and how ROMA Heating & Cooling handles the project.
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Boiler maintenance in Vancouver: what an annual service does for your home
What annual boiler maintenance covers in Vancouver, why the city's housing and coastal climate make it worthwhile, how a service differs from a repair or an emergency call, the record the technician leaves behind, and how ROMA Heating & Cooling handles a maintenance visit.
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Combi boiler installation in Burnaby: permits, sizing and what to expect
How a combi boiler installation works in Burnaby: the city's gas, heating-system and plumbing/hydronic permits, heat-loss and hot-water sizing, where combis fit in the city's bungalows, townhouses and secondary suites, venting and condensate planning, the installation sequence, and how ROMA Heating & Cooling handles the project.
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Emergency boiler repair in Surrey: what to do when the heat stops
What to do when a Surrey boiler fails: how to separate a gas or carbon-monoxide emergency from a no-heat breakdown, the safe steps to take while you wait, the faults behind a cold house, how a priority visit works, the permit boundary between a repair and a replacement in Surrey, and how annual servicing prevents the next emergency.
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Gas boiler repair in Langley: permits, diagnosis and what to expect
How gas boiler repair works in Langley, the City of Langley and the Township of Langley: the Technical Safety BC gas permit and each municipality's plumbing, sprinkler and residential permits, the faults found in older detached homes, newer subdivisions and acreage properties, how a fault is isolated between the boiler, the emitters and the controls, what the technician's readings mean, safe homeowner checks, carbon-monoxide safety, the annual gas-appliance duty for rental suites and strata, what a repair should leave on file, how a repair is quoted, when a fault becomes an emergency, repair versus replacement, and how ROMA Heating & Cooling handles repair calls.
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Boiler maintenance in Surrey: what an annual service covers
What annual boiler maintenance covers in Surrey, how the city's detached homes, secondary suites, townhouses and towers change what a visit spends its time on, the annual gas-appliance duty Surrey landlords carry, what the technician checks, the safe checks a homeowner can do between visits, and how ROMA Heating & Cooling handles a Surrey service visit.
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Winter cold snap: protecting your boiler and home
A cold-snap playbook for gas boiler homes in BC: thermostat setpoints that save without freezing, snow and ice care around the meter and vents, what a power outage does to a hydronic system, and the safety response that overrides everything else.
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Annual boiler maintenance checklist: what a technician checks
The technician-side annual boiler service in BC: the Technical Safety BC boiler checklist item by item, what Natural Resources Canada adds for a heating system check-up, what FortisBC says a service should include, and the printable list to keep with the boiler records.
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Carbon monoxide safety checklist for gas boiler homes
A four-layer carbon monoxide safety checklist for homes with gas boilers: the alarm layer, the appliance layer, the venting layer and the response layer, with the rules exactly as Technical Safety BC and FortisBC publish them.
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How hydronic heating works: zones, circulators and controls
How a hydronic system works and why it matters when choosing a boiler: the boiler, emitters and pump; zones and balancing; circulators and expansion; controls and setback setpoints; and how efficiency ratings such as AFUE connect to the way the system runs.
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Boiler replacement permits in Burnaby: gas, heating and plumbing
How permitting works for a gas boiler replacement in Burnaby: the gas, heating and hydronic permits the city issues, the 409,000 BTU threshold, who applies through the My Permits Portal, the completion and inspection process, and the records to keep afterwards.
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Boiler service cost in Vancouver: what drives the price of a visit
What shapes the price of servicing a gas boiler in Vancouver: what a proper annual service includes, how combi and heating-only boilers differ, the effect of access, condition and system size, Vancouver housing factors, and how to compare service quotes.
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Boiler installation permits in Vancouver: gas, mechanical and inspection
The permit path for a new gas boiler in Vancouver, step by step: the gas and mechanical permits the city issues, the 2 psi and 409,600 BTU/hr boundaries that decide whether the city or Technical Safety BC permits the job, who may hold a homeowner permit, the application, notification and inspection sequence, permit amendments, how fees work, the Vancouver Building By-law's electric-heating direction, and the records to keep when the permit closes.
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Comparisons
IBC SL 10-85 G3 vs SL 14-115 G3
Side-by-side comparison of the two smallest IBC SL Series G3 boilers: efficiency, output range, minimum fire rate and the homes each fits.
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IBC SL 14-115 G3 vs SL 20-160 G3
Side-by-side comparison of the middle two IBC SL Series G3 boilers: output headroom, venting constraints, weight and where each fits.
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IBC SL 20-160 G3 vs SL 30-199 G3
Side-by-side comparison of the two largest IBC SL Series G3 boilers: output range, venting and connection differences, and the buildings each fits.
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IBC VX 110 vs VX 150
Side-by-side comparison of the two smaller IBC VX boilers: capacity, venting reach, weight and where each fits.
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IBC VX 150 vs VX 199
Side-by-side comparison of the two largest IBC VX boilers: output, minimum fire rate, venting and pressure-rating trade-offs.
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IBC SFC 99-1 vs SFC 125-1
Side-by-side comparison of the two smallest IBC Superflow SFC-1 combi boilers: identical heating side, different DHW reach and efficiency.
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IBC SFC 125-1 vs SFC 199-1
Side-by-side comparison of the two largest IBC Superflow SFC-1 combi boilers: heating and DHW reach, delivery rates and cascade capability.
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IBC SL 14-115 G3 vs SL 30-199 G3
Side-by-side comparison of the smallest common and largest residential IBC SL Series G3 boilers, with the decision factors that actually separate them.
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IBC SL 26-260 G3 vs SL 40-399 G3
Side-by-side comparison of IBC's two commercial SL G3 boilers: capacity, efficiency basis, vent size and operating-pressure differences.
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IBC DC 23-84 vs DC 15-95
Side-by-side comparison of the two smallest discontinued IBC DC combis: low-fire range, AFUE, DHW flow and weight.
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IBC DC 15-95 vs DC 15-96
Side-by-side comparison of the near-twin DC 15-95 and DC 15-96 combis: the AFUE, weight and vessel differences are what separate them.
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IBC DC 15-96 vs DC 29-106
Side-by-side comparison of the DC 15-96 and DC 29-106 combis: output headroom against AFUE and low-fire behaviour.
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IBC DC 29-106 vs DC 33-124
Side-by-side comparison of the DC 29-106 and DC 33-124 combis: output and DHW flow gains at the same 94% AFUE and weight.
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IBC DC 33-124 vs DC 20-125
Side-by-side comparison of the DC 33-124 and DC 20-125 combis: nearly equal output with very different low-fire, efficiency and weight.
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IBC HC 13-50 vs HC 23-84
Side-by-side comparison of the two smallest discontinued HC heating boilers: capacity step with everything else essentially unchanged.
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IBC HC 23-84 vs HC 15-95
Side-by-side comparison of the HC 23-84 and HC 15-95 heating boilers: overlapping output with a lower fire and higher AFUE on the 15-95.
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IBC HC 15-95 vs HC 15-96
Side-by-side comparison of the HC 15-95 and HC 15-96: the AFUE and vessel differences are the only meaningful separation.
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IBC HC 15-96 vs HC 29-106
Side-by-side comparison of the HC 15-96 and HC 29-106: extra capacity traded against efficiency and low-fire range.
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IBC HC 29-106 vs HC 20-125
Side-by-side comparison of the HC 29-106 and HC 20-125: the 20-125 wins on low fire, output and efficiency at a weight cost.
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IBC EX 400 vs EX 500
Side-by-side comparison of the two smaller IBC EX commercial boilers: capacity and efficiency trade-off on the same connection group.
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IBC EX 500 vs EX 700
Side-by-side comparison of the EX 500 and EX 700: the point where the EX line changes flue, water connections and vent limits.
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IBC EX 700 vs EX 850
Side-by-side comparison of the two largest IBC EX boilers: capacity and flow step with efficiency and connections unchanged.
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Viessmann Vitodens 100-W B1HE-85 vs B1HE-120
Side-by-side comparison of the two smallest Vitodens 100-W heating-only models: firing range, minimum fire rate, identical footprint, and the homes each fits.
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Viessmann Vitodens 100-W B1HE-120 vs B1HE-150
Side-by-side comparison of the mid-range and larger Vitodens 100-W heating-only models: input ceiling, minimum fire, weight and cabinet differences.
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Viessmann Vitodens 100-W B1HE-150 vs B1HE-199
Side-by-side comparison of the two largest Vitodens 100-W heating-only models: identical cabinet and efficiency, differing firing range and minimum fire.
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Viessmann Vitodens 100-W B1KE-120 vs B1KE-199
Side-by-side comparison of the two Vitodens 100-W combi models: heating range, continuous DHW draw, weight and cabinet differences, and when the bigger combi is justified.
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Viessmann Vitodens 200-W B2HE-85 vs B2HE-120
Side-by-side comparison of the two smallest Vitodens 200-W B2HE models: identical minimum fire, weight and controls, differing only in maximum input.
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Viessmann Vitodens 200-W B2HE-120 vs B2HE-150
Side-by-side comparison of the mid-range and larger Vitodens 200-W B2HE models: input ceiling, minimum fire and the step to the heavier cabinet.
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Viessmann Vitodens 200-W B2HE-150 vs B2HE-199
Side-by-side comparison of the two largest Vitodens 200-W B2HE models: identical chassis and minimum fire, with the 199 adding maximum-input headroom.
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Viessmann Vitodens 200-W B2HA-285 vs B2HA-311
Side-by-side comparison of the two smallest Vitodens 200-W B2HA models: identical minimum fire, weight and cabinet, differing in maximum input and in how the page labels their efficiency rows.
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Viessmann Vitodens 200-W B2HA-311 vs B2HA-352
Side-by-side comparison of the two middle Vitodens 200-W B2HA models, which share minimum fire, cabinet and printed efficiency, differing only in maximum input.
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Viessmann Vitodens 200-W B2HA-352 vs B2HA-399
Side-by-side comparison of the largest mid-chassis and the first large-chassis Vitodens 200-W B2HA models: input range, minimum fire, weight, dimensions and the printed efficiency row.
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Viessmann Vitodens 200-W B2HA-399 vs B2HA-530
Side-by-side comparison of the two largest Vitodens 200-W B2HA models: identical chassis and minimum fire, with the 530 adding maximum-input headroom at a slightly lower printed efficiency row.
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Viessmann Vitocrossal 300 CU3A-94 vs CU3A-125
Side-by-side comparison of the two smallest Vitocrossal 300 CU3A models: input range, minimum fire, weight and the shared compact floor-standing footprint.
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Viessmann Vitocrossal 300 CU3A-125 vs CU3A-160
Side-by-side comparison of the mid-size and larger Vitocrossal 300 CU3A models: input ceiling, minimum fire, weight and the step to the deeper cabinet.
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Viessmann Vitocrossal 300 CU3A-160 vs CU3A-199
Side-by-side comparison of the two largest Vitocrossal 300 CU3A models: identical chassis and minimum fire, with the 199 adding maximum-input headroom.
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Viessmann Vitocrossal 200 CI2-399 vs CI2-500
Side-by-side comparison of the two smallest Vitocrossal 200 CI2 models: identical minimum fire, efficiency, weight and water content, differing only in maximum input.
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Viessmann Vitocrossal 200 CI2-500 vs CI2-750
Side-by-side comparison of the top entry-chassis and first middle-chassis Vitocrossal 200 CI2 models: input range, efficiency, weight and the step to the larger cabinet.
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Viessmann Vitocrossal 200 CI2-750 vs CI2-1000
Side-by-side comparison of the two middle-chassis Vitocrossal 200 CI2 models: identical weight and water content, differing in firing range and the printed efficiency row.
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Viessmann Vitocrossal 200 CI2-1000 vs CI2-1500
Side-by-side comparison of the largest middle-chassis and the first large-chassis Vitocrossal 200 CI2 models: firing range, weight, water content and the chassis step.
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Viessmann Vitocrossal 200 CI2-1500 vs CI2-2000
Side-by-side comparison of the two largest Vitocrossal 200 CI2 models: the 2000 adds maximum-input headroom with a higher minimum fire, more weight and a lower water-content row.
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Viessmann Vitocrossal 200 CM2-186 vs CM2-246
Side-by-side comparison of the two smallest Vitocrossal 200 CM2 models: identical efficiency and turndown, differing in firing range and weight within the small chassis.
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Viessmann Vitocrossal 200 CM2-246 vs CM2-311
Side-by-side comparison of the mid-size and largest small-chassis Vitocrossal 200 CM2 models: firing range, weight and the approach of the 1000 MBH mark.
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Viessmann Vitocrossal 200 CM2-311 vs CM2-400
Side-by-side comparison of the largest small-chassis and first large-chassis Vitocrossal 200 CM2 models: firing range, the chassis and weight jump, and the efficiency-row step.
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Viessmann Vitocrossal 200 CM2-400 vs CM2-500
Side-by-side comparison of the two smallest large-chassis Vitocrossal 200 CM2 models: identical efficiency and turndown, differing in firing range and weight.
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Viessmann Vitocrossal 200 CM2-500 vs CM2-620
Side-by-side comparison of the two largest Vitocrossal 200 CM2 models: the 620 adds maximum-input headroom with a higher minimum fire and more weight at the same efficiency.
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Viessmann Vitodens 200-W B2HB 19, 68 vs B2HB 26, 94
Side-by-side comparison of the two smallest Vitodens 200-W B2HB models: firing ranges, propane minimums, Net AHRI ratings and the shared compact chassis.
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Viessmann Vitodens 200-W B2HB 26, 94 vs B2HB 35, 125
Side-by-side comparison of the two larger B2HB compact-chassis models: identical minimum fire and chassis, with the 35, 125 adding maximum-input headroom.
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Viessmann Vitodens 200-W B2HB 35, 125 vs B2HB 45, 160
Side-by-side comparison of the largest compact-chassis and the first large-chassis Vitodens 200-W B2HB models: firing range, chassis step, water content and common-venting change.
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Viessmann Vitodens 200-W B2HB 45, 160 vs B2HB 57, 199
Side-by-side comparison of the two largest Vitodens 200-W B2HB models: identical chassis, water content and minimum fire, with the 57, 199 adding maximum-input headroom.
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Viessmann Vitodens 222-F B2TA 19 vs B2TA 35
Side-by-side comparison of the two Vitodens 222-F B2TA combi sizes: heating range, DHW delivery, identical tank, weight and dimensions.
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Viessmann Vitodens 222-F B2TA 35 vs B2TB-125
Side-by-side comparison of the last B2TA combi and the B2TB-125 that followed it: same tank and input range, with the newer generation's higher AFUE.
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Viessmann Vitogas 100 GS1-22 vs GS1-29
Side-by-side comparison of the two smallest Vitogas 100 GS1 models: sections, burners, firing range, weight and the printed AFUE difference.
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Viessmann Vitogas 100 GS1-48 vs GS1-60
Side-by-side comparison of the two largest Vitogas 100 GS1 models: firing range, sections, width, weight and the printed AFUE difference.
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Viessmann Vitogas 100 GS10-72 vs GS10-84
Side-by-side comparison of the two smaller Vitogas 100 GS10 commercial models: two-stage firing, sections, weight, width and vent collar size.
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Viessmann Vitogas 100 GS10-84 vs GS10-96
Side-by-side comparison of the two largest Vitogas 100 GS10 commercial models: full-load firing, sections, weight and vent collar size.
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Viessmann Vitogas 050 ECD-65 vs ECD-80
Side-by-side comparison of the two smallest Vitogas 050 ECD models: identical chassis, differing firing rates and a tenth of printed AFUE.
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Viessmann Vitogas 050 ECD-140 vs ECD-155
Side-by-side comparison of the two five-section Vitogas 050 ECD models: identical chassis, differing firing rate and printed AFUE.
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Viessmann Vitogas 050 ECD-180 vs ECD-200
Side-by-side comparison of the two largest Vitogas 050 ECD models: identical chassis, with the top size trading a tenth of AFUE for its extra firing range.
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Viessmann Vitogas 050 RS-8 vs RS-11
Side-by-side comparison of the two smaller Vitogas 050 RS commercial models: two-stage firing, sections, weight, width and vent collar size.
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Viessmann Vitocrossal 300 CT3-17 vs CT3-22
Side-by-side comparison of the two smallest Vitocrossal 300 CT3 models: firing range, printed efficiency rows, weight and water content on the same chassis.
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Viessmann Vitocrossal 300 CT3-37 vs CT3-46
Side-by-side comparison of the first two wide-chassis Vitocrossal 300 CT3 models: identical efficiency rows, differing firing range, weight and water content.
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Viessmann Vitocrossal 300 CT3-57 vs CT3-72
Side-by-side comparison of the largest 800 mm-shell and first 951 mm-shell Vitocrossal 300 CT3 models: firing range, the chassis step and efficiency.
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Viessmann Vitocrossal 300 CT3-72 vs CT3-89
Side-by-side comparison of the two largest Vitocrossal 300 CT3 models: identical chassis, with the 89 adding maximum-input headroom at the range's lowest printed efficiency.
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Viessmann Vitodens 100-W B1HA 26, 94 vs B1HA 35, 125
Side-by-side comparison of the two heating-only Vitodens 100-W B1HA models: identical chassis and minimum fire, with the 35, 125 adding maximum-input headroom.
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Viessmann Vitodens 100-W B1HA 35, 125 vs B1KA 35, 125
Side-by-side comparison of the heating-only B1HA and the combi B1KA in the same generation: identical heating side, with the B1KA adding on-demand DHW.
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Viessmann Vitodens 100-W WB1A 8-24 vs WB1A 8-30
Side-by-side comparison of the two Vitodens 100-W WB1A boilers: identical chassis and minimum fire, with the 8-30 adding maximum-input headroom.
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Viessmann Vitodens 100-W WB1B 26 vs WB1B 35
Side-by-side comparison of the two Vitodens 100-W WB1B boilers: identical chassis and minimum fire, with the 35 adding maximum-input headroom.
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Viessmann Vitodens 200-W WB2B-19 vs WB2B-26
Side-by-side comparison of the two smallest Vitodens 200-W WB2B models: identical chassis and minimum fire, with the 26 adding maximum-input headroom.
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Viessmann Vitodens 200-W WB2B-45 vs WB2B-60
Side-by-side comparison of the two mid-chassis Vitodens 200-W WB2B models: identical chassis and minimum fire, with the 60 adding maximum-input headroom.
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Viessmann Vitodens 200-W WB2B-80 vs WB2B-105
Side-by-side comparison of the two largest Vitodens 200-W WB2B models: identical chassis and minimum fire, with the 105 adding maximum-input headroom and a printed thermal-efficiency row.
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Navien NCB-190/060H vs NCB-190/080H
Side-by-side comparison of the two smallest Navien NCB-H combis: identical minimum fire, cabinet and DHW rating, differing only in heating ceiling.
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Navien NCB-190/080H vs NCB-240/110H
Side-by-side comparison of the 190-class and 240-class Navien NCB-H combis: heating ceiling, DHW range, minimum fire and weight differences.
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Navien NCB-240/110H vs NCB-240/130H
Side-by-side comparison of the two 240-class Navien NCB-H combis: identical minimum fire, weight and DHW rating, differing only in heating ceiling.
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Navien NCB-240/130H vs NCB-250/150H
Side-by-side comparison of the two largest Navien NCB-H combis: heating ceiling, DHW ceiling, minimum fire and when the 250-class model is justified.
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Navien NFC-250/175H vs NFC-250/200H
Side-by-side comparison of the two Navien NFC-H fire-tube combis: identical cabinet, DHW side and minimum fire, differing only in the heating ceiling.
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Navien NFB-175H vs NFB-200H
Side-by-side comparison of the two Navien NFB-H heating-only boilers: identical cabinet and minimum fire, with the 200H adding heating ceiling for larger loads.
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Navien NHB-55H vs NHB-80H
Side-by-side comparison of the two smallest Navien NHB-H compact boilers: identical minimum fire and cabinet, differing in heating ceiling and turndown.
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Navien NHB-80H vs NHB-110H
Side-by-side comparison of the mid-size Navien NHB-H compact boilers: firing range, minimum fire, weight and the load band each covers.
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Navien NHB-110H vs NHB-150H
Side-by-side comparison of the two largest Navien NHB-H compact boilers: identical cabinet and minimum fire, with the 150H adding 40 MBH of heating ceiling.
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Navien NFB-301C vs NFB-399C
Side-by-side comparison of the two Navien NFB-C commercial wall-hung fire-tube condensing boilers: identical cabinet, venting and connections, differing in firing range, capacity, weight and water content.
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Navien NFB700-500C vs NFB700-600C
Side-by-side comparison of the two entry Navien NFB700-C floor-standing commercial boilers: identical cabinet, minimum fire, connections and venting, differing only in the firing ceiling and ratings.
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Navien NFB700-600C vs NFB700-800C
Side-by-side comparison of the small-frame and large-frame Navien NFB700-C floor-standing commercial boilers: cabinet, weight, connections, venting and ratings all step up between the 600C and the 800C.
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Navien NFB700-800C vs NFB700-1000C
Side-by-side comparison of the two large-frame Navien NFB700-C floor-standing commercial boilers: identical cabinet, connections and venting, differing in the firing ceiling — with a caveat on the 1000C's printed net AHRI figure.
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Navien NCB-180 vs NCB-210
Side-by-side comparison of the two smaller first-generation Navien NCB combis from the discontinued line: capacity, DHW range and efficiency differences.
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Navien NCB-210 vs NCB-240
Side-by-side comparison of the largest two first-generation Navien NCB combis: the top of the discontinued line's range.
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Navien NCB-150E vs NCB-180E
Side-by-side comparison of the two smallest models in Navien's discontinued NCB-E combi generation.
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Navien NCB-210E vs NCB-240E
Side-by-side comparison of the two larger models in Navien's discontinued NCB-E combi generation.
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Navien NFC-175 vs NFC-200
Side-by-side comparison of the two models in Navien's discontinued first-generation NFC fire-tube combi series.
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Navien NFB-175 vs NFB-200
Side-by-side comparison of the two models in Navien's discontinued first-generation NFB heating-only boiler series.
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Navien NPE-180A2 vs NPE-210A2
Side-by-side comparison of the two smaller Navien NPE-A2 condensing tankless water heaters.
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Navien NPE-210A2 vs NPE-240A2
Side-by-side comparison of the two largest Navien NPE-A2 condensing tankless water heaters.
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Navien NPE-150S2 vs NPE-180S2
Side-by-side comparison of the two smallest Navien NPE-S2 standard condensing tankless water heaters.
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Navien NPE-210S2 vs NPE-240S2
Side-by-side comparison of the two largest Navien NPE-S2 standard condensing tankless water heaters.
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Navien NPN-160U vs NPN-199U
Side-by-side comparison of the smallest and largest Navien NPN-U universal non-condensing tankless water heaters.
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Navien NPN-160E vs NPN-199E
Side-by-side comparison of the smallest and largest Navien NPN-E outdoor non-condensing tankless water heaters.
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Noritz NRCB180DV vs NRCB199DV
Side-by-side comparison of the two Noritz NRCB condensing combis: identical cabinet, weight, minimum fire and efficiency, differing only in the heating and DHW ceilings.
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Noritz EZ71DV vs EZ98DV
Side-by-side comparison of the two smaller Noritz EZ Series condensing tankless water heaters.
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Noritz EZ98DV vs EZ111DV
Side-by-side comparison of the two larger Noritz EZ Series condensing tankless water heaters.
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Noritz NRC98DV vs NRC111DV
Side-by-side comparison of the two larger Noritz NRC Series residential tankless water heaters.
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Noritz NRC661A-DV vs NRC711-DV
Side-by-side comparison of the two compact Noritz NRC Series tankless water heaters.
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Noritz NRCR92DV vs NRCR111DV
Side-by-side comparison of the two Noritz NRCR condensing tankless water heaters with integrated recirculation.
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Noritz NCC199CDV vs NCC300DV
Side-by-side comparison of the two Noritz NCC Commercial Series tankless water heaters.
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Noritz CB180DV vs CB199DV
Side-by-side comparison of the two models in Noritz's legacy CB Combi line, documented from archived official pages.
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NTI Trinity FTVN085 vs FTVN110
Side-by-side comparison of the two smallest heating-only Trinity FTVN models: the 96% AFUE FTVN085 versus the larger-ceiling FTVN110.
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NTI Trinity FTVN110 vs FTVN150
Side-by-side comparison of the mid-range heating-only Trinity FTVN models: input ceiling, minimum fire, weight and venting differences.
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NTI Trinity FTVN150 vs FTVN199
Side-by-side comparison of the two largest heating-only Trinity FTVN models: capacity, minimum fire and the 199's venting terms.
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NTI Trinity FTVN110C vs FTVN150C
Side-by-side comparison of the two smaller Trinity FTVN combis: heating ceiling, DHW delivery and weight differences.
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NTI Trinity FTVN150C vs FTVN199C
Side-by-side comparison of the two largest Trinity FTVN combis: DHW delivery, input ceiling, weight and the 199C's venting terms.
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NTI Trinity TRX085 vs TRX120
Side-by-side comparison of the two smallest heating-only Trinity TRX models: the 96% AFUE TRX085 versus the larger-ceiling TRX120.
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NTI Trinity TRX120 vs TRX150
Side-by-side comparison of the mid-range heating-only Trinity TRX models: input ceiling, connections, weight and minimum fire.
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NTI Trinity TRX150 vs TRX199
Side-by-side comparison of the two largest heating-only Trinity TRX models: input range, LP figures, weight and the 199's venting terms.
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NTI Trinity TRX110C vs TRX150C
Side-by-side comparison of the two smaller Trinity TRX combis: heating input, DHW delivery, weight and the 110C's efficiency edge.
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NTI Trinity TRX150C vs TRX199C
Side-by-side comparison of the two largest Trinity TRX combis: DHW delivery, input ceiling, connection class and weight.
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NTI Trinity TFTN085 vs TFTN110
Side-by-side comparison of the two smallest Trinity TFTN wall models: identical cabinet, differing AFUE and firing range.
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NTI Trinity TFTN110 vs TFTN150
Side-by-side comparison of the mid-range Trinity TFTN wall models: input ceiling, minimum fire, weight and cabinet depth.
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NTI Trinity TFTN150 vs TFTN199
Side-by-side comparison of the two largest compact-cabinet Trinity TFTN wall models: identical dimensions, differing input range and weight.
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NTI Trinity TFTN199 vs TFTN285
Side-by-side comparison of the compact-class TFTN199 and the wider, larger-input TFTN285 wall models.
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NTI Trinity TFTN285 vs TFTN340
Side-by-side comparison of the TFTN285 and the larger TFTN340 wall models: input, cabinet, connections and the move to 4" venting.
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NTI Trinity TFTN340 vs TFTN399
Side-by-side comparison of the two largest Trinity TFTN wall models: identical width, height, weight and ratings, differing in depth and ceiling.
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NTI Compass NC085 vs NC110
Side-by-side comparison of the two smallest heating-only NTI Compass floor models: the 96% AFUE NC085 versus the larger-ceiling NC110.
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NTI Compass NC110 vs NC150
Side-by-side comparison of the mid-range heating-only NTI Compass floor models: input ceiling, minimum fire and weight.
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NTI Compass NC150 vs NC199
Side-by-side comparison of the two largest heating-only NTI Compass floor models: input ceiling, minimum fire and weight.
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NTI Compass NC110C vs NC150C
Side-by-side comparison of the two smaller NTI Compass combis: heating ceiling, DHW delivery and weight.
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NTI Compass NC150C vs NC199C
Side-by-side comparison of the two largest NTI Compass combis: DHW delivery, input ceiling and weight.
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NTI Trinity Lx150 vs Lx200
Side-by-side comparison of the two smallest Trinity Lx fire-tube boilers: input ceiling, LP terms, weight and venting.
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NTI Trinity Lx200 vs Lx300
Side-by-side comparison of the Trinity Lx200 and Lx300 fire-tube boilers: input range, venting class and connections.
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NTI Trinity Lx300 vs Lx400
Side-by-side comparison of the Trinity Lx300 and Lx400 fire-tube boilers: input range, efficiency and the 399 MBH wall-hung class.
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NTI Trinity Lx400 vs Lx500
Side-by-side comparison of the Trinity Lx400 and Lx500 fire-tube boilers: the step from the wall-hung class into the light-commercial class.
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NTI Trinity Lx500 vs Lx600
Side-by-side comparison of the Trinity Lx500 and Lx600 fire-tube boilers: input range, weight and the gas connection step.
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NTI Trinity Lx600 vs Lx700
Side-by-side comparison of the Trinity Lx600 and the manual-only Lx700 fire-tube boilers, including how NTI documents each size.
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NTI Trinity Lx700 vs Lx800
Side-by-side comparison of the manual-documented Trinity Lx700 and the page-listed Trinity Lx800 fire-tube boilers.
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NTI Trinity TFTN500 vs TFTN600
Side-by-side comparison of the two smallest floor-mounted Trinity TFTN models: input ceiling, thermal efficiency and Net AHRI differences on the shared 575 lb floor chassis.
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NTI Trinity TFTN600 vs TFTN725
Side-by-side comparison of the mid-range floor-mounted Trinity TFTN models: the 725's step in capacity, connections and venting class.
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NTI Trinity TFTN725 vs TFTN850
Side-by-side comparison of the two largest floor-mounted Trinity TFTN models: capacity ceiling at nearly identical weight, connections and venting.
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NTI Trinity FTG1200 vs FTG1400
Side-by-side comparison of the entry pair on NTI's FTG commercial fire-tube table: input ceiling, heating capacity and the small efficiency step.
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NTI Trinity FTG1400 vs FTG2000
Side-by-side comparison across the FTG class change: the FTG2000's step in input, weight, water and gas connection.
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NTI Trinity FTG2000 vs FTG2200
Side-by-side comparison of the mid-step FTG fire-tube sizes: identical class and minimum fire, with the 2200's higher ceiling at a lower efficiency rating.
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NTI Trinity FTG2200 vs FTG2400
Side-by-side comparison of the two largest FTG fire-tube sizes on NTI's page: identical class, with the 2400 topping the family at 2,350 MBH.
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NTI GF 200 vs GF150
Comparison of the two NTI Green Furnace models: capacity, efficiency and hot-water delivery.
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Lochinvar Knight WHB055 vs WHB085
Side-by-side comparison of the two smallest Lochinvar Knight wall-hung boilers: minimum fire, capacity and venting differences.
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Lochinvar Knight WHB085 vs WHB110
Side-by-side comparison of the mid-range Lochinvar Knight wall-hung boilers: capacity ceiling, minimum fire and venting trade-offs.
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Lochinvar Knight WHB110 vs WHB155
Side-by-side comparison of the Knight WHB110 and WHB155 wall-hung boilers: the step where the series moves to 3"-only venting.
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Lochinvar Knight WHB155 vs WHB199
Side-by-side comparison of the Knight WHB155 and WHB199: capacity, connection size and the load band each wall-hung boiler covers.
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Lochinvar Knight WHB199 vs WHB285
Side-by-side comparison of the Knight WHB199 and WHB285: the load band, minimum fire and venting options that separate them.
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Lochinvar Noble NKB080 vs NKB110
Side-by-side comparison of the two smallest Noble heating boilers: minimum fire, capacity ceiling and shared installation details.
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Lochinvar Noble NKB110 vs NKB150
Side-by-side comparison of the mid-range Noble heating boilers: capacity headroom, water content and the venting step at the 150 size.
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Lochinvar Noble NKB150 vs NKB199
Side-by-side comparison of the two largest Noble heating boilers: firing range, DOE capacity and the 199's tightened 2" vent allowance.
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Lochinvar Noble NKC110 vs NKC150
Side-by-side comparison of the two smaller Noble wall-hung combis: heating ceiling, DHW connection detail and venting step.
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Lochinvar Noble NKC150 vs NKC199
Side-by-side comparison of the two largest Noble wall-hung combis: capacity ceiling, minimum fire and the tightest 2" vent allowance in the line.
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Lochinvar Noble NCF110 vs NCF150
Side-by-side comparison of the two smaller Noble floor-standing combis: heating ceiling, venting step and shared combi connections.
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Lochinvar Noble NCF150 vs NCF199
Side-by-side comparison of the two largest Noble floor combis: the capacity ceiling, minimum fire and venting step between them.
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Lochinvar Knight XL KBX0400 vs KBX0500
Side-by-side comparison of the two smallest Lochinvar Knight XL Commercial boilers: capacity, minimum fire and shared connections.
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Lochinvar Knight XL KBX0500 vs KBX0650
Side-by-side comparison of the KBX0500 and KBX0650: the size where the commercial Knight XL steps its vent and gas connections.
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Lochinvar Knight XL KBX0650 vs KBX0800
Side-by-side comparison of the KBX0650 and KBX0800: identical connections separated by 150 MBH of ceiling.
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Lochinvar Knight XL KBX0800 vs KBX1000
Side-by-side comparison of the two largest Knight XL Commercial boilers: the connection and capacity step at the top of the line.
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Lochinvar FTXL FTX400 vs FTX500
Side-by-side comparison of the two smallest Lochinvar FTXL fire-tube boilers: capacity, efficiency and shared plant details.
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Lochinvar FTXL FTX500 vs FTX600
Side-by-side comparison of the FTX500 and FTX600: the size where the FTXL's turndown steps from 10:1 to 7:1.
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Lochinvar FTXL FTX600 vs FTX725
Side-by-side comparison of the FTX600 and FTX725: the size where the FTXL line steps its water connections and vent.
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Lochinvar FTXL FTX725 vs FTX850
Side-by-side comparison of the FTX725 and FTX850: identical plant connections separated by 125 MBH of ceiling.
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Lochinvar FTXL FTX850 vs FTX1000
Side-by-side comparison of the FTX850 and the FTX1000 flagship: series, turndown and efficiency differences at the top of the FTXL line.
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Lochinvar Crest FBN0751 vs FBN1001
Side-by-side comparison of the two smallest Crest FB(N,L) boilers: turndown, capacity and the line's flagship documentation size.
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Lochinvar Crest FBN1001 vs FBN1251
Side-by-side comparison of the FBN1001 and FBN1251: the size where the Crest FB steps its gas inlet and vent.
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Lochinvar Crest FBN1501 vs FBN1751
Side-by-side comparison of the FBN1501 and FBN1751: two 4"-pipe Crest sizes sharing the deepest turndown in the FB line.
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Lochinvar Crest FBN2001 vs FBN2501
Side-by-side comparison of the FBN2001 and FBN2501: the turndown and connection step at the middle of the Crest FB range.
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Lochinvar Crest FBN2501 vs FBN3001
Side-by-side comparison of the FBN2501 and FBN3001: the step to 10" air and vent within the 20:1 band of the Crest FB line.
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Lochinvar Crest FBN5001 vs FBN6001
Side-by-side comparison of the two largest Crest FB(N,L) boilers: the 6.0 million BTU/hr ceiling and the top sizes' plant requirements.
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Lochinvar Crest FCB1000 vs FCB1500
Side-by-side comparison of the two smallest Crest with Hellcat FCB boilers: the connection step between the 999 and 1500 MBH sizes.
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Lochinvar Crest FCB1500 vs FCB2000
Side-by-side comparison of the FCB1500 and FCB2000: identical Hellcat plant connections separated by capacity.
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Lochinvar Crest FCB2000 vs FCB2500
Side-by-side comparison of the FCB2000 and FCB2500: the entry of the 20:1-turndown band within the Hellcat line.
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Lochinvar Crest FCB3000 vs FCB4000
Side-by-side comparison of the FCB3000 and FCB4000: capacity, the 12" air/vent step and the line's documented-efficiency size.
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Lochinvar Crest FCB5000 vs FCB6000
Side-by-side comparison of the two largest Crest with Hellcat FCB boilers: the 6.0 million BTU/hr ceiling of the Hellcat line.
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Lochinvar Copper-Fin Atmospheric CBN500 vs Fan Assisted CBN0497
Side-by-side comparison of the top atmospheric Copper-Fin and the bottom fan-assisted Copper-Fin: the 82% to 84% efficiency step and the vent-size change.
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Lochinvar Copper-Fin Fan Assisted CBN0497 vs Copper-Fin II CHN0402
Side-by-side comparison of the entry fan-assisted Copper-Fin and the entry Copper-Fin II: capacity against control sophistication.
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Lochinvar Copper-Fin Fan Assisted CBN0747 vs Copper-Fin II CHN0752
Side-by-side comparison of the 745 MBH fan-assisted Copper-Fin and the 750 MBH Copper-Fin II: the closest cross-line sizing decision.
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Lochinvar Copper-Fin Fan Assisted CBN2067 vs Copper-Fin II CHN2072
Side-by-side comparison of the two flagship Copper-Fin boilers: the 84% fan-assisted line against the 85% Copper-Fin II line at 2.07 million BTU/hr.
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Lochinvar Power-fin PBN0502-M9 vs PBN0752-M9
Side-by-side comparison of the two smallest Power-fin M9 boilers: input range, gross output and connection sizes.
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Lochinvar Power-fin PBN1302-M9 vs PBN1501-M9
Comparison of the 1.3 and 1.5 million BTU/hr Power-fin M9 sizes: efficiency, output and vent sizing.
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Lochinvar Power-fin PBN2500 vs PBN3000
Comparison of the 2.5 and 3.0 million BTU/hr Power-fin sizes from the PBXT-Sub-07 submittal.
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Lochinvar SYNC SBN1000 vs SBN1300
Comparison of two discontinued SYNC condensing boiler sizes from the archived I&O ratings table.
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Lochinvar Epic EPB080N vs EPB110N
Comparison of the two smallest Epic wall boilers: input range, capacity and vent sizing.
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Lochinvar Epic EPC150N vs EPC199N
Comparison of the two larger Epic wall combis: heating capacity and domestic hot water delivery.
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Lochinvar Epic EFC110N vs EFC199N
Comparison of the smallest and largest Epic floor combis from the EFC-Sub-01 submittal.
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Lochinvar Squire SIT030 vs SIT050
Comparison of two single-wall Squire indirect tanks: capacity, delivery and coil load.
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Lochinvar Squire SIT065 vs SIT119
Comparison of the 67- and 113-gallon Squire single-wall indirect tanks.
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Lochinvar Armor AWH0400NPM vs AWH0500NPM
Comparison of the two smallest Armor AWH condensing water heaters.
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Lochinvar Armor AWH3000NPM vs AWH4000NPM
Comparison of the two largest Armor AWH condensing water heaters.
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Lochinvar Armor AWN151PM vs AWN286PM
Comparison of two Armor AWN light-commercial condensing water heaters.
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Lochinvar Armor WAN125PM vs WAN201PM
Comparison of the smallest and largest Armor wall-mount condensing water heaters.
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Lochinvar Knight WHN055 vs WHN085
Comparison of two legacy Knight WHN wall-hung boiler sizes from the archived I&O ratings table.
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Lochinvar Knight KHN199 vs KHN285
Comparison of two legacy Knight KHN floor boiler sizes from the archived I&O ratings table.
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Rinnai IP060160C vs IP090099C
Side-by-side comparison of the two smallest Rinnai I-Series+ combis: heating reach versus DHW reach in the same 73 lb chassis.
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Rinnai IP090099C vs IP090199C
Side-by-side comparison of the two 90k-heating Rinnai I-Series+ combis: identical heating side, very different DHW side and venting.
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Rinnai IP090199C vs IP120199C
Side-by-side comparison of the 90k and 120k Rinnai I-Series+ combis: heating reach, DHW flow, weight and vent options.
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Rinnai IP120199C vs IP150199C
Side-by-side comparison of the two largest fully documented Rinnai I-Series+ combis: identical hardware, different heating ceiling.
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Rinnai IP060S vs IP090S
Side-by-side comparison of the two smallest Rinnai I-Series+ heating-only solos: identical hardware, different heating ceiling.
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Rinnai IP090S vs IP120S
Side-by-side comparison of the mid-size Rinnai I-Series+ solos: heating ceiling, heat exchanger and weight step.
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Rinnai IP120S vs IP150S
Side-by-side comparison of the two largest fully documented Rinnai I-Series+ solos: identical hardware, different heating ceiling.
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Rinnai Q85SN vs Q130SN
Side-by-side comparison of the two smallest heating-only models in Rinnai's Q-Series legacy boiler line.
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Rinnai Q175CN vs Q175SN
Side-by-side comparison of the Q175 combi and the Q175 solo in Rinnai's legacy Q-Series.
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Rinnai Q175SN vs Q205SN
Side-by-side comparison of the two largest heating-only models in Rinnai's legacy Q-Series.
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Rinnai RX130iN vs RX160iN
Side-by-side comparison of the two smaller Rinnai SENSEI RX condensing tankless water heaters.
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Rinnai RX180iN vs RX199iN
Side-by-side comparison of the two largest Rinnai SENSEI RX condensing tankless water heaters.
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Rinnai RXP160iN vs RXP199iN
Side-by-side comparison of the two Rinnai SENSEI RXP premium condensing tankless water heaters.
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Triangle Tube Prestige Solo 80 vs Solo 110
Side-by-side comparison of the two smallest Prestige Solo sizes: identical cabinet, weight and connections, differing in firing range, turndown and capacity.
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Triangle Tube Prestige Solo 110 vs Solo 155
Side-by-side comparison of the Solo 110 and Solo 155: capacity and connection upgrades against a higher minimum fire and 15 lb of extra weight.
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Triangle Tube Prestige Solo 155 vs Solo 175
Side-by-side comparison of the two nearest Prestige Solo sizes: the 175 trades a higher minimum fire for 17 MBH of extra ceiling and 15 MBH more DOE capacity.
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Triangle Tube Prestige Solo 175 vs Solo 250
Side-by-side comparison of the Solo 175 and Solo 250: how much ceiling the 250 adds and what the higher minimum fire costs in mild weather.
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Triangle Tube Prestige Solo 250 vs Solo 299
Side-by-side comparison of the Solo 250 and Solo 299: the transition from the compact 3"-vented chassis to the large 4"-vented chassis, with capacity and minimum-fire trade-offs.
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Triangle Tube Prestige Solo 299 vs Solo 399
Side-by-side comparison of the two largest Prestige Solo sizes: identical large chassis and minimum fire, with the 399 adding 100 MBH of ceiling and an efficiency-figure nuance.
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Triangle Tube Instinct 110S vs 155S (wall)
Side-by-side comparison of the two smaller Instinct wall solos: matching cabinet, connections and venting, with the 155S adding capacity at the cost of weight and minimum fire.
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Triangle Tube Instinct 155S vs 199S (wall)
Side-by-side comparison of the top two Instinct wall solos: the 199S adds 44 MBH of ceiling and loses the 2" venting option, while minimum fire and weight both rise.
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Triangle Tube Phase III TR-20 vs TR-30
Comparison of two Phase III TR indirect water heater sizes from the archived official manual.
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Triangle Tube Phase III SMART 60 vs SMART 80
Comparison of two Phase III SMART indirect water heater sizes from the archived official manual.
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Weil-McLain ECO Tec 80-H vs 110-H
Side-by-side comparison of the two smallest ECO Tec heat-only boilers: identical cabinet and efficiency, different firing ceilings and turndown.
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Weil-McLain ECO Tec 110-H vs 150-H
Side-by-side comparison of the mid-size ECO Tec heat-only boilers: capacity, water content and weight across the 110-to-150 step.
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Weil-McLain ECO Tec 150-H vs 199-H
Side-by-side comparison of the two largest ECO Tec heat-only boilers: capacity headroom, water content and the 199's shorter 2" vent limit.
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Weil-McLain ECO Tec 110-C vs 150-C
Side-by-side comparison of the two smaller ECO Tec combi boilers: heating range, weight and hot-water headroom.
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Weil-McLain ECO Tec 150-C vs 199-C
Side-by-side comparison of the two largest ECO Tec combis: capacity, the 199-C's DHW headline and its shorter 2" vent allowance.
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Weil-McLain ECO Tec 150-H vs 150-C
Side-by-side comparison of the heat-only and combi versions of the same 150 MBH ECO Tec: identical heating ratings, different hot-water role.
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Weil-McLain Evergreen EVG-110 vs EVG-155
Side-by-side comparison of the two smallest Evergreen boilers: capacity, efficiency and the shared 110-155 platform.
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Weil-McLain Evergreen EVG-155 vs EVG-220
Side-by-side comparison across the Evergreen platform break: the 155's 110-155 design versus the 220's larger 220-399 design.
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Weil-McLain Evergreen EVG-220 vs EVG-299
Side-by-side comparison of the mid-size Evergreen boilers: capacity step, water content and the move to mandatory 4" venting.
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Weil-McLain Evergreen EVG-299 vs EVG-399
Side-by-side comparison of the top Evergreen sizes: 100 MBH of extra input and why the 399's efficiency headline is not an AFUE.
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Weil-McLain Ultra 80 vs Ultra 105
Side-by-side comparison of the two smallest Ultra Series 4 boilers: capacity, low fire and the efficiency step between them.
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Weil-McLain Ultra 105 vs Ultra 155
Side-by-side comparison of the Ultra 105 and 155: capacity step and the move to 3"-only venting.
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Weil-McLain Ultra 155 vs Ultra 230
Side-by-side comparison of the Ultra 155 and the highest-rated Ultra 230: capacity, efficiency and the 230's vent-length trade-off.
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Weil-McLain Ultra 230 vs Ultra 299
Side-by-side comparison of the Ultra 230 and 299: capacity against the efficiency and connection step at the top of the line.
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Weil-McLain Ultra 299 vs Ultra 399
Side-by-side comparison of the two largest Ultra boilers: capacity step and why the 399's 91.7% rating is not an AFUE.
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Weil-McLain GV90+3 vs GV90+4
Side-by-side comparison of the two smallest GV90+ boilers: capacity, efficiency and the shared cabinet.
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Weil-McLain GV90+4 vs GV90+5
Side-by-side comparison of the mid-size GV90+ boilers: capacity step and the move to the longer cabinet.
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Weil-McLain GV90+5 vs GV90+6
Side-by-side comparison of the two largest GV90+ boilers: capacity headroom, water content and the heaviest unit in the line.
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Weil-McLain Simplicity 110-C vs 150-C
Side-by-side comparison of the two smaller Simplicity combis: heating range, hot-water delivery and weight in the compact cabinet.
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Weil-McLain Simplicity 150-C vs 199-C
Side-by-side comparison of the two largest Simplicity combis: capacity, cabinet growth, connections and the 199's venting rules.
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Bosch Greenstar ZBR 21-3A vs ZBR 28-3A
Side-by-side comparison of the two smallest current Greenstar wall boilers: identical cabinet, minimum fire and ratings, differing only in maximum input.
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Bosch Greenstar ZBR 28-3A vs ZBR 35-3A
Side-by-side comparison of the mid-range Greenstar wall boilers: capacity gain against higher minimum fire, more noise and shorter vent runs.
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Bosch Greenstar ZBR 35-3A vs ZBR 42-3A
Side-by-side comparison of the two largest Greenstar wall boilers: the same low-fire floor and vent class, differing only at the top of the range.
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Bosch Greenstar Combi 100p (ZWB 28-3A) vs Combi 151p (ZWB 42-3A)
Side-by-side comparison of Bosch's two current Greenstar wall combis: heating and DHW reach, flow rates and minimum-fire trade-offs.
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Bosch Greenstar KBR 21-3A vs KBR 28-3A
Side-by-side comparison of the two smallest Greenstar FS floor boilers: identical cabinets and low-fire floor, differing only at maximum input.
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Bosch Greenstar KBR 28-3A vs KBR 35-3A
Side-by-side comparison of the mid-range Greenstar FS floor boilers: output headroom against a higher minimum fire and shorter vent class.
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Bosch Greenstar KBR 35-3A vs KBR 42-3A
Side-by-side comparison of the two largest Greenstar FS floor boilers: capacity headroom at the top of the KBR line with no physical change.
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Bosch Greenstar KWB 28-3A vs KWB 35-3A
Side-by-side comparison of the two smaller Greenstar FS floor combis: heating and DHW headroom against a higher minimum fire.
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Bosch Greenstar KWB 35-3A vs KWB 42-3A
Side-by-side comparison of the two largest Greenstar FS floor combis: identical structure and vent class, more heating and hot-water reach on the 42-3A.
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Buderus GB162-80 kW vs GB162-100 kW
Side-by-side comparison of the two Buderus GB162 sizes sold in North America: capacity and electrical demand against the efficiency-documentation difference.
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Buderus GB142-24 kW vs GB142-30 kW
Historical side-by-side of the two smallest GB142 sizes: identical cabinets and pressure ratings, different firing ranges.
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Buderus GB142-30 kW vs GB142-45 kW
Historical side-by-side of the middle GB142 sizes: the step where the cabinet, weight, pressure rating and firing range all change.
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Buderus GB142-45 kW vs GB142-60 kW
Historical side-by-side of the two largest GB142 sizes: the same long cabinet and pressure rating with the range-topping firing package on the 60 kW.
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Bosch Singular 4000 vs Singular 5200
Side-by-side comparison of the two Bosch Singular combis: identical cabinet, efficiency and venting, with the 5200 adding heating and DHW reach.
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Buderus SSB800 (Gen 2) vs SSB1000 (Gen 2)
Side-by-side of the two single-module Gen 2 SSB commercial condensing boilers: same cabinet and efficiency, different input ceiling and combustion efficiency.
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Buderus SSB1000 (Gen 2) vs SSB1000TL (Gen 2)
Side-by-side of the Gen 2 SSB1000 and SSB1000TL: same ratings, different connection sizes and cascade role.
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Buderus SSB800 Gen 1 vs SSB800 Gen 2
Generation-to-generation comparison of the SSB800: identical ratings, upgraded heat-exchanger material and components in Gen 2.
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Buderus SSB1000TL (Gen 2) vs SSB1000TL4 (Gen 2)
Single-module vs four-module cascade in the Gen 2 SSB family: identical efficiency and venting, four times the input and a much longer cabinet.
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Buderus SSB85 vs SSB120
Side-by-side of the two smallest discontinued SSB condensing boilers: identical efficiency and connections, larger input and cabinet on the SSB120.
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Buderus SSB255 vs SSB399
Side-by-side of the mid-size discontinued SSB condensing boilers: same cabinet and turndown, larger firing package on the SSB399.
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Buderus SSB399 vs SSB512
Side-by-side of the two largest discontinued SSB condensing boilers: same cabinet and venting, different firing package and water connection size.
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Buderus GB312/90 vs GB312/160
Side-by-side of two discontinued GB312 sizes: the smallest and mid-range sections, with capacity, efficiency and weight differences.
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Buderus GB312/200 vs GB312/280
Side-by-side of the two largest discontinued GB312 sizes: the top of the line, with section count, output and efficiency trade-offs.
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Buderus G124X/18 vs G124X/32
Side-by-side of the smallest and largest discontinued G124X atmospheric boilers: input, capacity, efficiency and physical differences.
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Buderus GA124/17 vs GA124/30
Side-by-side of the smallest and largest discontinued GA124 sealed-combustion boilers: output and physical differences only.
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Buderus GC124 II 18/3 vs 32/5
Side-by-side of the smallest and largest discontinued GC124 II atmospheric boilers: input, weight and vent differences.
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Buderus GC144 II 18/3 vs 32/5
Side-by-side of the smallest and largest discontinued GC 144 II atmospheric boilers: input, weight and vent differences.
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Buderus G234X/38 vs G234X/64
Side-by-side of the smallest and largest discontinued G234X atmospheric boilers: capacity, weight and vent differences.
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Buderus G334X/73 vs G334X/132
Side-by-side of the smallest and largest discontinued G334X atmospheric boilers: capacity, efficiency and physical differences.
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Buderus G315/5 vs G315/9
Side-by-side of the smallest and largest discontinued G315 cast-iron boiler blocks: section count, input, output and weight scaling.
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Buderus G515/240 vs G515/510
Side-by-side of the smallest and largest discontinued G515 cast-iron boiler blocks: section count, output range and physical scaling.
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Buderus G615/570 vs G615/1200
Side-by-side of the smallest and largest discontinued G615 cast-iron boiler blocks: section count, output and weight scaling.
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Buderus SB625WS 160 vs SB625WS 640
Side-by-side of the smallest and largest discontinued SB625WS condensing boiler blocks: input, output, water and surface scaling.
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Buderus SB745WS 800 vs SB745WS 1550
Side-by-side of the smallest and largest discontinued SB745WS condensing boiler blocks: input, output, water and surface scaling.
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Laars FTHW100 vs FTHW140
Side-by-side comparison of the two smallest Laars FT wall heating-only boilers: same wall-hung condensing platform, differing only in the 100 versus 140 MBH rating step.
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Laars FTHW140 vs FTHW199
Side-by-side comparison of the two largest Laars FT wall heating-only boilers: identical platform and diagnostics, with the 199 adding the top-of-range input step.
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Laars FTCW140 vs FTCW199
Side-by-side comparison of the two Laars FT wall combi boilers: identical integrated-DHW platform, with the 199 extending the rating to the top of the combi range.
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Laars FTCW140 vs FTHW140
Side-by-side comparison of the combi versus heating-only 140 MBH FT wall models: same wall-hung condensing size, different hot-water arrangement and manual.
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Laars FTCW199 vs FTHW199
Side-by-side comparison of the combi versus heating-only 199 MBH FT wall models: the largest wall size in each arrangement, differing in hot-water capability and manual.
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Laars FTHF199N vs FTCF199N
Side-by-side comparison of the two Laars FT floor models: identical floor-standing 199 MBH condensing platform in heating-only and combi arrangements.
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Laars JX050 vs JX075
Side-by-side comparison of the two smallest Laars Mini-Therm JX boilers: identical non-condensing analog-diagnostic design at the 50 and 75 size steps.
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Laars JX075 vs JX100
Side-by-side comparison of the JX075 and JX100 Mini-Therm JX boilers: the step between the small and middle size columns of the non-condensing line.
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Laars JX100 vs JX125
Side-by-side comparison of the mid-range Laars Mini-Therm JX boilers at the 100 and 125 size steps.
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Laars JX125 vs JX150
Side-by-side comparison of the JX125 and JX150 Laars Mini-Therm JX boilers: the step from the 125 to the 150 size column of the non-condensing line.
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Laars JX150 vs JX200
Side-by-side comparison of the two largest Laars Mini-Therm JX boilers: the 150 and 200 columns at the top of the non-condensing range.
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Laars NTH080 vs NTH105
Side-by-side comparison of the two smallest Laars NeoTherm Residential boilers: same modulating platform and code system at the 080 and 105 sizes.
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Laars NTH105 vs NTH150
Side-by-side comparison of the NTH105 and NTH150 NeoTherm Residential boilers: the step up to the 150 size column of the modulating line.
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Laars NTH150 vs NTH210
Side-by-side comparison of the NTH150 and NTH210 NeoTherm Residential boilers: the step from mid-range to the upper size columns.
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Laars NTH210 vs NTH285
Side-by-side comparison of the two largest Laars NeoTherm Residential boilers: the top of the NTH 080-285 range and the boundary with the commercial line.
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Laars NeoTherm XTR NT2H 399 vs NT2H 500
Comparison of the two smallest NeoTherm XTR sizes from the Document 1477 submittal.
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Laars NeoTherm XTR NT2H 999 vs NT2H 1500
Comparison of the two largest NeoTherm XTR sizes from the Document 1477 submittal.
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Laars NeoTherm NTH 399 vs NTH 500
Comparison of two commercial NeoTherm NTH sizes from the Document 1217 submittal.
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Laars MagnaTherm MGH 1600 vs MGH 2000
Comparison of the two smallest MagnaTherm MGH sizes from the Document 1429 submittal.
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Laars MagnaTherm HTD 2000 vs HTD 2500
Comparison of two MagnaTherm HTD sizes from the Document 1425 submittal.
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Laars MagnaTherm FT CFH1500 vs CFH2000
Comparison of two MagnaTherm FT firetube sizes from the Document 1460 submittal.
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Laars Pennant PNCH1000 vs PNCH1250
Comparison of two Pennant hydronic boiler sizes from the Document 1558 submittal.
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Laars Mighty Therm2 MT2H 1000 vs MT2H 1250
Comparison of two Mighty Therm2 hydronic sizes from the Document 1560 submittal.
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Laars Rheos+ RHHH1200 vs RHHH1600
Comparison of two discontinued Rheos+ condensing boiler sizes from Document 1185B.
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Bradford White Brute FT BFTHW-301 vs BFTHW-399
Side-by-side comparison of the two Canadian-listed Bradford White Brute FT boiler sizes: identical chassis and installation envelope, differing in input ceiling, turndown, output and efficiency ratings.
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Utica Oneida CO-90 vs CO-150
Side-by-side comparison of the two smaller Oneida CO residential combis: DHW reach and heating ceiling against the shared cabinet and efficiency rating.
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Utica Oneida CO-150 vs CO-200
Side-by-side comparison of the two largest Oneida CO combis: the range-topping DHW and heating reach of the CO-200 against the CO-150's lower minimum fire.
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Utica Oneida CH-80 vs CH-100
Side-by-side comparison of the two smallest Oneida CH residential boilers: the same cabinet and low-fire behaviour, differing at the top of the range.
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Utica Oneida CH-100 vs CH-120
Side-by-side comparison of the mid-size Oneida CH residential boilers: 18 MBH of extra heating capacity at the same cabinet and efficiency.
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Utica Oneida CH-120 vs CH-150
Side-by-side comparison of the mid-to-large Oneida CH residential boilers: 29 MBH of heating-capacity headroom against a 3 MBH higher minimum fire.
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Utica Oneida CH-150 vs CH-180
Side-by-side comparison of the two largest Oneida CH residential boilers: the range-topping capacity of the CH-180 against the CH-150's lower minimum fire.
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Utica MGB-060K vs MGB-095K
Side-by-side comparison of the Utica MGB-060K and MGB-095K MGB-K cast-iron boilers: capacity and rating differences against the shared atmospheric design.
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Utica MGB-095K vs MGB-120K
Side-by-side comparison of the Utica MGB-095K and MGB-120K MGB-K cast-iron boilers: capacity and rating differences against the shared atmospheric design.
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Utica MGB-120K vs MGB-150K
Side-by-side comparison of the Utica MGB-120K and MGB-150K MGB-K cast-iron boilers: capacity and rating differences against the shared atmospheric design.
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Utica MGB-150K vs MGB-175K
Side-by-side comparison of the Utica MGB-150K and MGB-175K MGB-K cast-iron boilers: capacity and rating differences against the shared atmospheric design.
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Utica MGB-175K vs MGB-205K
Side-by-side comparison of the Utica MGB-175K and MGB-205K MGB-K cast-iron boilers: capacity and rating differences against the shared atmospheric design.
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Utica PEG075EID vs PEG112EID
Side-by-side comparison of the Utica PEG075EID and PEG112EID PEG-E cast-iron steam boilers: steam capacity, section count and piping changes against the shared atmospheric design.
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Utica PEG112EID vs PEG150EID
Side-by-side comparison of the Utica PEG112EID and PEG150EID PEG-E cast-iron steam boilers: steam capacity, section count and piping changes against the shared atmospheric design.
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Utica PEG150EID vs PEG187EID
Side-by-side comparison of the Utica PEG150EID and PEG187EID PEG-E cast-iron steam boilers: steam capacity, section count and piping changes against the shared atmospheric design.
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Utica PEG187EID vs PEG225EID
Side-by-side comparison of the Utica PEG187EID and PEG225EID PEG-E cast-iron steam boilers: steam capacity, section count and piping changes against the shared atmospheric design.
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Utica PEG225EID vs PEG262EID
Side-by-side comparison of the Utica PEG225EID and PEG262EID PEG-E cast-iron steam boilers: steam capacity, section count and piping changes against the shared atmospheric design.
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Utica PEG262EID vs PEG299EID
Side-by-side comparison of the Utica PEG262EID and PEG299EID PEG-E cast-iron steam boilers: steam capacity, section count and piping changes against the shared atmospheric design.
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Utica SVB-2 vs SVB-3
Side-by-side comparison of the Utica SVB-2 and SVB-3 SVB Series 4 boilers: capacity and venting differences against the shared induced-draft design.
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Utica SVB-3 vs SVB-4
Side-by-side comparison of the Utica SVB-3 and SVB-4 SVB Series 4 boilers: capacity and venting differences against the shared induced-draft design.
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Utica SVB-4 vs SVB-5
Side-by-side comparison of the Utica SVB-4 and SVB-5 SVB Series 4 boilers: capacity and venting differences against the shared induced-draft design.
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Utica SVB-5 vs SVB-6
Side-by-side comparison of the Utica SVB-5 and SVB-6 SVB Series 4 boilers: capacity and venting differences against the shared induced-draft design.
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HTP UFT-80W vs UFT-100W
Side-by-side comparison of the two smallest HTP Universal Fire Tube (UFT) wall boilers: the same wall cabinet and low-fire behaviour, differing at the top of the firing range.
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HTP UFT-100W vs UFT-120W
Side-by-side comparison of the mid-entry UFT wall boilers: 20 MBH of extra ceiling, a higher printed AFUE, and a heavier wall package in the same cabinet.
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HTP UFT-120W vs UFT-140W
Side-by-side comparison of the two middle UFT wall boilers: identical physical package, with the 140 trading the line's lowest printed AFUE for 20 MBH of ceiling.
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HTP UFT-140W vs UFT-175W
Side-by-side comparison of the largest compact and first wide-cabinet UFT wall boilers: cabinet, weight, minimum fire and turndown all change at this step.
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HTP UFT-175W vs UFT-199W
Side-by-side comparison of the two largest HTP UFT wall boilers: one physical package, with the 199 carrying the line's top printed efficiency and capacity.
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HTP EFTU-85WBN vs EFTU-110WBN
Side-by-side comparison of the two smallest EFTU boiler-only models: the same wall package, with the 85 printing the line's best AFUE and the 110 adding heating reach.
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HTP EFTU-110WBN vs EFTU-150WBN
Side-by-side comparison of the mid-size EFTU boiler-only models: more heating reach, water content and weight at the same printed AFUE.
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HTP EFTU-150WBN vs EFTU-199WBN
Side-by-side comparison of the two largest EFTU boiler-only models: the 199's 46 MBH of extra heating capacity against its mandatory 3" venting, deeper cabinet and heavier package.
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HTP EFTU-110WCN vs EFTU-150WCN
Side-by-side comparison of the two smaller EFTU wall-hung combis: heating reach and DHW flow against weight and water content.
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HTP EFTU-150WCN vs EFTU-199WCN
Side-by-side comparison of the two largest EFTU combis: the 199's DHW and heating reach against its mandatory 3" venting and heavier, deeper package.
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HTP Elite XL ELX-400FBN vs ELX-500FBN
Side-by-side comparison of the two smallest HTP Elite XL commercial boilers: the same cabinet and vent route, 100 MBH of extra ceiling on the 500.
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HTP Elite XL ELX-1000FBN vs ELX-1500FBN
Side-by-side comparison of the largest LP-capable Elite XL and the first natural-gas-only size: fuel, vent, connections and weight all step up at the 1500.
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HTP Mod Con 500 vs Mod Con 700
Side-by-side comparison of the two smaller discontinued HTP Mod Con commercial boilers: identical package, with the 700 adding capacity and the line's top efficiency.
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HTP Mod Con 700 vs Mod Con 850
Side-by-side comparison of the two largest discontinued HTP Mod Con boilers: the 850's capacity and vent step-up against the 700's better printed efficiency.
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HTP Mod Con 1000 Double Stack vs Mod Con 1700 Double Stack
Side-by-side comparison of the two discontinued HTP Mod Con Double Stack models: capacity and connection step-ups at the same printed efficiency.
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HTP EFW-285WBN vs EFW-340WBN
Side-by-side comparison of the first two HTP EFW wall boilers: capacity, venting and connection step-ups across the 285 and 340 sizes.
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HTP EFW-340WBN vs EFW-399WBN
Side-by-side comparison of the two largest HTP EFW wall boilers: identical platform, cabinet and efficiency, with the 399 adding 59 MBH of capacity.
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HTP EP-80 vs EP-110
Side-by-side comparison of the two smallest retired Elite Premier boilers: identical cabinet and efficiency, with the EP-110 adding input headroom.
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HTP EP-110 vs EP-150
Side-by-side comparison of the mid-entry Elite Premier boilers: the EP-150 trades one point of printed AFUE for 38 MBH more heating capacity and a deeper cabinet.
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HTP EP-150 vs EP-220
Side-by-side comparison of the Elite Premier mid-size step: more capacity and larger gas/vent connections at the same printed AFUE.
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HTP EP-220 vs EP-299
Side-by-side comparison of the two largest Elite Premier frame sizes up to 299 MBH: connection and cabinet growth against the same printed efficiency.
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HTP EP-299 vs EP-301
Side-by-side comparison of the Elite Premier 299/301 pair: one printed table row apart, with the EP-301 adding 2 MBH of ceiling and a higher efficiency print.
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HTP EP-301 vs EP-399
Side-by-side comparison of the two largest Elite Premier boilers: the EP-399's capacity, connection and weight growth against its higher minimum fire.
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HTP PHR100-55 vs PHR130-55
Side-by-side comparison of the two smallest Pioneer high-mass heaters: same physical package, with the PHR100-55 printing the better efficiency and the PHR130-55 the extra ceiling.
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HTP PHR130-55 vs PHR160-55
Side-by-side comparison of the Pioneer mid-size step: more input, larger vent allowance and a higher printed efficiency in the same 55-gallon package.
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HTP PHR160-55 vs PHR199-55
Side-by-side comparison of the two largest Pioneer high-mass heaters: identical package and efficiency, with the PHR199-55 carrying 39 MBH more ceiling.
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HTP EFT-55 vs EFT-80
Side-by-side comparison of the two smallest retired Elite FT boilers: same compact cabinet, with the EFT-80 adding capacity at almost no weight cost.
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HTP EFT-80 vs EFT-110
Side-by-side comparison of the middle small Elite FT boilers: 30 MBH more input and a little more water content in the same cabinet.
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HTP EFT-110 vs EFT-155
Side-by-side comparison of the Elite FT compact-to-mid cabinet step: a bigger frame, more water mass and 40 MBH more capacity.
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HTP EFT-155 vs EFT-199
Side-by-side comparison of the mid-size Elite FT pair: same frame and connections, with the EFT-199 carrying the larger ceiling.
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HTP EFT-199 vs EFT-285
Side-by-side comparison of the largest 5:1 Elite FT and the smallest 10:1 model: generation, turndown, gas connection, MAWP and venting all change.
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HTP EFT-285 vs EFT-399
Side-by-side comparison of the two largest Elite FT boilers: the EFT-399's capacity and thermal-efficiency print against its larger cabinet, connection and vent.
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HTP EFTC-140W vs EFTC-199W
Side-by-side comparison of the two EFT Combi Wall models: hot-water delivery, cabinet size and turndown against a small AFUE difference.
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HTP EFTC-140F vs EFTC-199F
Side-by-side comparison of the two EFT Combi Floor models: the 199F's hot-water delivery and higher printed AFUE against the 140F.
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HTP PHE130-55 vs PHE130-80
Side-by-side comparison of the 55 and 80-gallon Versa-Hydro models on the 130k burner: more storage and recovery at the same input.
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HTP PHE130-80 vs PHE130-119
Side-by-side comparison of the two largest 130k Versa-Hydro tanks: more storage and a higher printed efficiency in a wider, heavier cabinet.
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HTP PHE199-55 vs PHE199-80
Side-by-side comparison of the 55 and 80-gallon 199k Versa-Hydro models: more storage at the same input, recovery and printed efficiency.
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HTP PHE199-80 vs PHE199-119
Side-by-side comparison of the two largest 199k Versa-Hydro tanks: the top storage option against the 80-gallon model at the same input.
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HTP PHE130-80S vs PHE130-119S
Side-by-side comparison of the two 130k Versa-Hydro-Solar tanks: the same solar configuration and input with more storage in the larger cabinet.
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HTP PHE199-80S vs PHE199-119S
Side-by-side comparison of the two 199k Versa-Hydro-Solar tanks: the same solar burner and module with the top storage option against the 80-gallon unit.
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HTP PHR-130-55C vs PHR-160-55C
Side-by-side comparison of the two smaller Versa-Flame models: more input, hot-water delivery and a larger vent in the same package.
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HTP PHR-160-55C vs PHR-199-55C
Side-by-side comparison of the two largest Versa-Flame models: identical package and vent, with the PHR-199-55C carrying the top hot-water delivery.
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HTP UFTC-140W vs UFTC-199W
Side-by-side comparison of the two UFT Combi wall models: hot-water delivery and cabinet size against a one-point AFUE step.
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HTP UFTC-140F vs UFTC-199F
Side-by-side comparison of the two UFT Combi floor models: the 199F's hot-water delivery and larger cabinet against the 140F.
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Burnham Alpine ALP080B vs ALP105B
Side-by-side comparison of the two smallest Burnham Alpine condensing boilers: same chassis class, venting and connections, differing by 25 MBH of input ceiling and 24 MBH of DOE capacity.
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Burnham Alpine ALP105B vs ALP150B
Side-by-side comparison of the second and third Burnham Alpine sizes: 45 MBH more input ceiling, output gains of 40 MBH DOE, and a tighter 3"-only vent profile.
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Burnham Alpine ALP150B vs ALP210B
Side-by-side comparison of the mid-size and large Burnham Alpine: identical connections and 3" venting, differing in input, output and weight.
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Burnham Alpine ALP210B vs ALP285B
Side-by-side comparison of the largest wall-hung-capable and the floor-only top residential Alpine: capacity, connections, venting and altitude-rating differences.
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Burnham ES2 ES23 vs ES24
Side-by-side comparison of the two smallest Burnham ES2 cast-iron boilers: identical Category I chimney-vented design differing in fixed input, ratings and draft-hood size.
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Burnham ES2 ES24 vs ES25
Side-by-side comparison of the second and third ES2 sizes: 35 MBH more fixed input, and the move to the 6" draft-hood group.
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Burnham ES2 ES25 vs ES26
Side-by-side comparison of the two 6" draft-hood ES2 sizes: identical venting and connections, differing by 35 MBH of fixed input and one weight class.
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Burnham ES2 ES26 vs ES27
Side-by-side comparison of the last 6" draft-hood size and the first 7" size of the ES2 line: input, ratings, gas connection and weight changes.
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Burnham ES2 ES27 vs ES28
Side-by-side comparison of the two 7" draft-hood ES2 sizes: identical venting and gas connections, differing by 35 MBH of fixed input and 56 lb.
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Burnham ES2 ES28 vs ES29
Side-by-side comparison of the two largest ES2 sizes: the final 7" draft-hood size versus the 8" flagship, and the input/rating/weight differences between them.
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Burnham Alta ALTA-080 vs ALTA-120B
Side-by-side comparison of the two smallest heating-only Burnham Alta condensing boilers: same chassis depth and venting, differing by 40 MBH of input ceiling and 37 MBH of heating capacity.
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Burnham Alta ALTA-120B vs ALTA-150
Side-by-side comparison of the second and third heating-only Burnham Alta sizes: 30 MBH more input ceiling and a move to the deeper, heavier chassis.
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Burnham Alta ALTA-150 vs ALTA-180
Side-by-side comparison of the two largest heating-only Burnham Alta boilers: same chassis, weight and connections, differing only in the top of the firing range.
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Burnham Alta Combi ALTAC-136B vs ALTAC-200
Side-by-side comparison of the two Burnham Alta combi boilers: the compact 136B versus the flagship 200 with the top DHW input in the line.
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Slant/Fin Victory VSPH-60 vs VSPH-90
Side-by-side comparison of the two smallest Slant/Fin Victory VSPH sizes: fixed-input capacity, section count and altitude-based flue-run differences.
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Slant/Fin Victory VSPH-90 vs VSPH-120
Side-by-side comparison of the VSPH-90 and VSPH-120: 30,000 Btuh more fixed input, one more cast-iron section, and flue runs that shrink with size at altitude.
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Slant/Fin Victory VSPH-120 vs VSPH-150
Side-by-side comparison of the VSPH-120 and VSPH-150: 30,000 Btuh more fixed input, one more section, wider jacket — and one shorter flue band at every elevation.
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Slant/Fin Victory VSPH-150 vs VSPH-180
Side-by-side comparison of the two largest Slant/Fin Victory VSPH sizes: top fixed input and section count against the tightest flue-run limits in the series.
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Slant/Fin CHS-85 vs CHS-110
Side-by-side comparison of the Slant/Fin CHS-85 and CHS-110 CHS condensing boilers: capacity, rating and connection differences against the shared fire-tube design.
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Slant/Fin CHS-110 vs CHS-154
Side-by-side comparison of the Slant/Fin CHS-110 and CHS-154 CHS condensing boilers: capacity, rating and connection differences against the shared fire-tube design.
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Slant/Fin CHS-154 vs CHS-175
Side-by-side comparison of the Slant/Fin CHS-154 and CHS-175 CHS condensing boilers: capacity, rating and connection differences against the shared fire-tube design.
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Slant/Fin CHS-175 vs CHS-201
Side-by-side comparison of the Slant/Fin CHS-175 and CHS-201 CHS condensing boilers: capacity, rating and connection differences against the shared fire-tube design.
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Slant/Fin CHS-201 vs CHS-285
Side-by-side comparison of the Slant/Fin CHS-201 and CHS-285 CHS condensing boilers: capacity, rating and connection differences against the shared fire-tube design.
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Slant/Fin CHS-285 vs CHS-340
Side-by-side comparison of the Slant/Fin CHS-285 and CHS-340 CHS condensing boilers: capacity, rating and connection differences against the shared fire-tube design.
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Crown Phantom II PHTM2080H vs PHTM2120H
Side-by-side comparison of the two smallest Crown Phantom II heat-only boilers: the same chassis and installation envelope, differing in input range, ratings and minimum fire.
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Crown Phantom II PHTM2120H vs PHTM2150H
Side-by-side comparison of the small-cabinet and large-cabinet Phantom II heat-only sizes: the cabinet step and its input, output and minimum-fire consequences.
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Crown Phantom II PHTM2150H vs PHTM2180H
Side-by-side comparison of the two large-cabinet Crown Phantom II heat-only boilers: the same minimum fire and physical plant, differing only in top-end input and ratings.
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Crown Phantom II Combi PHTM2136C vs PHTM2200C
Side-by-side comparison of the two Crown Phantom II combi boilers: identical platform and control, differing in space-heating input, DHW input and delivery, cabinet and minimum fire.
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Crown Phantom-X PHNTM210 vs PHNTM285
Side-by-side comparison of the two Crown Phantom-X condensing boilers: shared platform, control and venting philosophy, differing in input range, ratings, connections, water content and weight.
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Crown Aruba 4 AWR070E vs AWR105E
Side-by-side comparison of the two smallest-typical Crown Aruba 4 cast-iron sizes: fixed-input capacity, efficiency, sections and flue-connector differences.
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Crown Aruba 4 AWR140E vs AWR175E
Side-by-side comparison of the middle Aruba 4 sizes: fixed-input capacity, sections and flue-connector differences on the shared Category I cast-iron platform.
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Crown Aruba 4 AWR210E vs AWR245E
Side-by-side comparison of the large Aruba 4 sizes: fixed-input capacity, sections, flue connector and dimension differences on the taller 33-1/2" jacket.
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Dunkirk Royal CO-90 vs CO-150
Side-by-side comparison of the two smaller Dunkirk Royal CO residential combis: DHW reach and heating ceiling against the shared cabinet and efficiency rating.
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Dunkirk Royal CO-150 vs CO-200
Side-by-side comparison of the two largest Dunkirk Royal CO combis: the range-topping DHW and heating reach of the CO-200 against the CO-150's lower minimum fire.
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Dunkirk Royal CO-90 vs CH-80
Side-by-side comparison of Dunkirk's entry combi and entry heating-only Royal boiler: identical heating side, with the CO-90 adding the DHW plate and the CH-80 keeping hot water separate.
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Dunkirk Royal CH-80 vs CH-100
Side-by-side comparison of the two smallest Dunkirk Royal CH residential boilers: the same cabinet and low-fire behaviour, differing at the top of the range.
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Dunkirk Royal CH-100 vs CH-120
Side-by-side comparison of the mid-size Dunkirk Royal CH residential boilers: 18 MBH of extra heating capacity at the same cabinet and efficiency.
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Dunkirk Royal CH-120 vs CH-150
Side-by-side comparison of the mid-to-large Dunkirk Royal CH residential boilers: 29 MBH of heating-capacity headroom against a 3 MBH higher minimum fire.
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Dunkirk Royal CH-150 vs CH-180
Side-by-side comparison of the two largest Dunkirk Royal CH residential boilers: the range-topping capacity of the CH-180 against the CH-150's lower minimum fire.
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Dunkirk DCC-115 vs DCC-150
Side-by-side comparison of the two smaller Dunkirk DCC combis: the DHW and heating reach of the 150 against the 115's lower fires — both end-of-life '(While supplies last)' models.
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Dunkirk DCC-150 vs DCC-205
Side-by-side comparison of the two largest Dunkirk DCC combis: the range-topping DHW capacity of the 205 against the DCC-150's shallower cabinet and 1/2" DHW connections.
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Dunkirk DCB-75 vs DCB-100
Side-by-side comparison of the two smallest Dunkirk DCB heating-only boilers: the DCB-75's printed 92% AFUE and low ceiling against the DCB-100's 95% AFUE and extra capacity.
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Dunkirk DCB-100 vs DCB-125
Side-by-side comparison of the mid-size Dunkirk DCB heating-only boilers: 27.6 MBH of extra capacity against a higher minimum fire and a 10 lb weight step.
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Dunkirk DCB-125 vs DCB-165
Side-by-side comparison of the two largest Dunkirk DCB heating-only boilers: the range-topping capacity of the 165 against the shallower, lighter DCB-125.
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Dunkirk DMG-240 vs DMG-380
Side-by-side comparison of Dunkirk's condensing DMG pair: the wall-hung residential/light-commercial DMG-240 against the floor-standing commercial DMG-380.
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Baxi Duo-tec Compact 30GA vs Luna Duo-tec 40GA
Side-by-side comparison of the two smaller Baxi Luna Duo-tec combis: heating and DHW reach against cabinet size and weight.
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Baxi Luna Duo-tec 40GA vs Luna Duo-tec 60GA
Side-by-side comparison of the two largest Baxi Luna Duo-tec combis: two-mode firing and DHW capacity against a deeper, heavier chassis.
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Baxi Luna Duo-tec 1.33GA vs Luna Duo-tec 1.48GA
Side-by-side comparison of the two smaller Baxi Luna Duo-tec heating boilers: input ceiling, cabinet and combustion package.
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Baxi Luna Duo-tec 1.48GA vs Luna Duo-tec 1.70MP
Side-by-side comparison across the GA-to-MP step in the Baxi heating range: input ceiling, control features and cabinet size.
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Baxi Luna Duo-tec 1.70MP vs Luna Duo-tec 1.110MP
Side-by-side comparison of the two largest Baxi Luna Duo-tec MP boilers: input ceiling, printed efficiency wording and commercial positioning.
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Smith 19HE-4 vs 19HE-6
Side-by-side comparison of two mid-range Smith 19HE cast-iron commercial sizes: gross output, net ratings, efficiencies, flue size and recommended piping.
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Smith 19HE-6 vs 19HE-9
Comparison of a six-section and a nine-section Smith 19HE boiler: capacity, net ratings, flue diameter and the piping each size requires.
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Smith 19HE-9 vs 19HE-12
Comparison of the two largest-end Smith 19HE sizes: top-of-line output, the 12" vent requirement and the piping changes above the -9.
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Smith RTS/28HE-6 vs RTS/28HE-8
Side-by-side comparison of two mid-size Smith 28HE RTS water boilers: gross and net output, efficiency, flow and connection sizes.
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Smith RTS/28HE-10 vs RTS/28HE-14
Comparison of a ten-section and a fourteen-section Smith 28HE RTS boiler: capacity, flow, water volume and weight for plant planning.
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Smith RTS/28HE-14 vs RTS/28HE-18
Comparison of the largest Smith 28HE RTS water boiler sizes: top-of-range output, flow, water volume, weight and the RTS operating rule.
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Smith GBX-105 vs GBX-140
Comparison of two discontinued Smith GBX residential boiler sizes: input, capacity, net rating, AFUE and connection sizes.
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Smith GVX-105 vs GVX-140
Comparison of two discontinued Smith GVX residential boiler sizes: capacity, efficiency and the optional power-vent feature.
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De Dietrich GT 123A vs GT 125A
Side-by-side comparison of two GT 120A sizes: capacity step, section count, weight and the shared efficiency and connection envelope.
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De Dietrich GT 124A vs GT 126A
Comparison of the middle and top GT 120A sizes: capacity, the 6" vent step on the 126A and the shared efficiency envelope.
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De Dietrich GT 224A vs GT 228A
Side-by-side comparison of the bottom and top GT 220A commercial sizes: capacity, connection step, vent size and shared efficiency.
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De Dietrich GT 226A vs GT 227A
Comparison of two adjacent GT 220A sizes: the 50 MBH input step, section count and the shared connection envelope.
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De Dietrich GT 334A vs GT 339A
Comparison of the bottom and top GT 330A commercial sizes: three-and-a-half-fold output step, connection style and vent sizing.
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De Dietrich GT 336A vs GT 338A
Comparison of two mid-range GT 330A sizes: capacity, section count, the 8" vent step and shared welded-pipe connections.
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De Dietrich MCA Pro 45 vs MCA Pro 115
Side-by-side comparison of the smallest and largest De Dietrich MCA Pro sizes: modulation range, venting step and shared condensing platform.
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De Dietrich MCA Pro 65 vs MCA Pro 90
Comparison of two mid-size MCA Pro boilers: output range, minimum fire, shared venting and connection envelope.
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A. O. Smith Burkay HW-300 vs HW-420
Side-by-side comparison of two A. O. Smith Burkay copper boiler sizes: input, output, connections, draft diverter and weight.
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A. O. Smith Burkay HW-420 vs HW-670
Comparison of the A. O. Smith Burkay HW-420 and top-size HW-670: input and output ratings, connections and vent sizing.
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A. O. Smith Burkay Genesis GWH-400 vs GWH-750
Comparison of two discontinued Burkay Genesis GWH water-heater models: official status, appliance type and documentation coverage.
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A. O. Smith Burkay Genesis GWH-1000 vs GWH-2500
Comparison of the smallest and largest officially listed Burkay Genesis GWH models: status, parts-list range and the GWH-2100 naming question.
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Raypak XVers L H7-406L vs XVers L H7-506L
Side-by-side comparison of two XVers L sizes: capacity step, efficiency, turndown and the plant-side figures that change between them.
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Raypak XVers L H7-506L vs XVers L H7-606L
Side-by-side comparison of two XVers L sizes: capacity step, efficiency, turndown and the plant-side figures that change between them.
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Raypak XVers L H7-606L vs XVers L H7-726L
Side-by-side comparison of two XVers L sizes: capacity step, efficiency, turndown and the plant-side figures that change between them.
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Raypak XVers L H7-726L vs XVers L H7-856L
Side-by-side comparison of two XVers L sizes: capacity step, efficiency, turndown and the plant-side figures that change between them.
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Raypak XTherm H7-1005A vs XTherm H7-1505A
Side-by-side comparison of two XTherm sizes: capacity step, efficiency, turndown and the plant-side figures that change between them.
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Raypak XTherm H7-1505A vs XTherm H7-2005A
Side-by-side comparison of two XTherm sizes: capacity step, efficiency, turndown and the plant-side figures that change between them.
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Raypak XTherm H7-2005A vs XTherm H7-3005
Side-by-side comparison of two XTherm sizes: capacity step, efficiency, turndown and the plant-side figures that change between them.
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Raypak XTherm H7-3505 vs XTherm H7-4005
Side-by-side comparison of two XTherm sizes: capacity step, efficiency, turndown and the plant-side figures that change between them.
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Raypak XFIIRE H7-300B vs XFIIRE H7-400B
Side-by-side comparison of two XFIIRE sizes: capacity step, efficiency, turndown and the plant-side figures that change between them.
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Raypak XFIIRE H7-400B vs XFIIRE H7-500B
Side-by-side comparison of two XFIIRE sizes: capacity step, efficiency, turndown and the plant-side figures that change between them.
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Raypak XFIIRE H7-500B vs XFIIRE H7-650B
Side-by-side comparison of two XFIIRE sizes: capacity step, efficiency, turndown and the plant-side figures that change between them.
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Raypak XFIIRE H7-800B vs XFIIRE H7-1000B
Side-by-side comparison of two XFIIRE sizes: capacity step, efficiency, turndown and the plant-side figures that change between them.
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Raypak MVB H7-504A vs MVB H7-754A
Side-by-side comparison of two MVB Category I & III sizes: capacity step, efficiency, turndown and the plant-side figures that change between them.
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Raypak MVB H7-754A vs MVB H7-1104A
Side-by-side comparison of two MVB Category I & III sizes: capacity step, efficiency, turndown and the plant-side figures that change between them.
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Raypak MVB H7-1104A vs MVB H7-1504A
Side-by-side comparison of two MVB Category I & III sizes: capacity step, efficiency, turndown and the plant-side figures that change between them.
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Raypak MVB H7-1504A vs MVB H7-2004A
Side-by-side comparison of two MVB Category I & III sizes: capacity step, efficiency, turndown and the plant-side figures that change between them.
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Raypak Hi Delta 302C vs Hi Delta 402C
Side-by-side comparison of two Hi Delta sizes: capacity step, efficiency, turndown and the plant-side figures that change between them.
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Raypak Hi Delta 502C vs Hi Delta 652C
Side-by-side comparison of two Hi Delta sizes: capacity step, efficiency, turndown and the plant-side figures that change between them.
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Raypak Hi Delta 902C vs Hi Delta 992C
Side-by-side comparison of two Hi Delta sizes: capacity step, efficiency, turndown and the plant-side figures that change between them.
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Raypak Hi Delta 1802C vs Hi Delta 2002C
Side-by-side comparison of two Hi Delta sizes: capacity step, efficiency, turndown and the plant-side figures that change between them.
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Raypak Hi Delta SS HD151 vs Hi Delta SS HD201
Side-by-side comparison of two Hi Delta SS sizes: capacity step, efficiency, turndown and the plant-side figures that change between them.
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Raypak Hi Delta SS HD301 vs Hi Delta SS HD401
Side-by-side comparison of two Hi Delta SS sizes: capacity step, efficiency, turndown and the plant-side figures that change between them.
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Raypak Delta Limited H4-399B vs Delta Limited H3-499B
Side-by-side comparison of two Delta Limited sizes: capacity step, efficiency, turndown and the plant-side figures that change between them.
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Raypak Delta Limited H3-649B vs Delta Limited H3-749B
Side-by-side comparison of two Delta Limited sizes: capacity step, efficiency, turndown and the plant-side figures that change between them.
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Raypak Delta Limited H8-1259B vs Delta Limited H9-1529B
Side-by-side comparison of two Delta Limited sizes: capacity step, efficiency, turndown and the plant-side figures that change between them.
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Raypak Delta Limited H9-2069B vs Delta Limited H9-2339B
Side-by-side comparison of two Delta Limited sizes: capacity step, efficiency, turndown and the plant-side figures that change between them.
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Fulton ENDURA EDR-750 vs ENDURA EDR-1000
Side-by-side comparison of two ENDURA sizes: capacity step, efficiency, turndown and the mechanical figures that change between them.
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Fulton ENDURA EDR-1000 vs ENDURA EDR-1500
Side-by-side comparison of two ENDURA sizes: capacity step, efficiency, turndown and the mechanical figures that change between them.
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Fulton ENDURA EDR-1500 vs ENDURA EDR-2000
Side-by-side comparison of two ENDURA sizes: capacity step, efficiency, turndown and the mechanical figures that change between them.
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Fulton VANTAGE VTG-2000 vs VANTAGE VTG-3000
Side-by-side comparison of two VANTAGE sizes: capacity step, efficiency, turndown and the mechanical figures that change between them.
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Fulton VANTAGE VTG-3000 vs VANTAGE VTG-4000
Side-by-side comparison of two VANTAGE sizes: capacity step, efficiency, turndown and the mechanical figures that change between them.
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Fulton VANTAGE VTG-4000 vs VANTAGE VTG-5000
Side-by-side comparison of two VANTAGE sizes: capacity step, efficiency, turndown and the mechanical figures that change between them.
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Fulton VANTAGE VTG-5000 vs VANTAGE VTG-6000
Side-by-side comparison of two VANTAGE sizes: capacity step, efficiency, turndown and the mechanical figures that change between them.
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Fulton Pulse PHW-300 vs Pulse PHW-500
Side-by-side comparison of two Pulse (PHW) sizes: capacity step, efficiency, turndown and the mechanical figures that change between them.
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Fulton Pulse PHW-750 vs Pulse PHW-1000
Side-by-side comparison of two Pulse (PHW) sizes: capacity step, efficiency, turndown and the mechanical figures that change between them.
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Fulton Pulse PHW-1400 vs Pulse PHW-2000
Side-by-side comparison of two Pulse (PHW) sizes: capacity step, efficiency, turndown and the mechanical figures that change between them.
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Fulton Pulse PHW-1000 vs Pulse PHW-2000LE
Side-by-side comparison of two Pulse (PHW) sizes: capacity step, efficiency, turndown and the mechanical figures that change between them.
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Cleaver-Brooks ClearFire-C 500 vs ClearFire-C 750
Side-by-side comparison of two ClearFire-C sizes: capacity step, water volume and the mechanical figures that change between them.
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Cleaver-Brooks ClearFire-C 1000 vs ClearFire-C 1500
Side-by-side comparison of two ClearFire-C sizes: capacity step, water volume and the mechanical figures that change between them.
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Cleaver-Brooks ClearFire-C 1800 vs ClearFire-C 2500
Side-by-side comparison of two ClearFire-C sizes: capacity step, water volume and the mechanical figures that change between them.
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Cleaver-Brooks ClearFire-C 2500 vs ClearFire-C 3300
Side-by-side comparison of two ClearFire-C sizes: capacity step, water volume and the mechanical figures that change between them.
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Cleaver-Brooks ClearFire-W CFW 400 vs ClearFire-W CFW 500
Side-by-side comparison of two ClearFire-W sizes: capacity step, water volume and the mechanical figures that change between them.
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Cleaver-Brooks ClearFire-W CFW 1000 vs ClearFire-W CFW 1500
Side-by-side comparison of two ClearFire-W sizes: capacity step, water volume and the mechanical figures that change between them.
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Cleaver-Brooks ClearFire-W CFW 1500 vs ClearFire-W CFW 2000
Side-by-side comparison of two ClearFire-W sizes: capacity step, water volume and the mechanical figures that change between them.
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Cleaver-Brooks ClearFire-W CFW 2000 vs ClearFire-W CFW 2400
Side-by-side comparison of two ClearFire-W sizes: capacity step, water volume and the mechanical figures that change between them.
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Cleaver-Brooks ClearFire-V 9.5 HP vs ClearFire-V 10 HP
Side-by-side comparison of two ClearFire-V sizes: capacity step, water volume and the mechanical figures that change between them.
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Cleaver-Brooks ClearFire-V 15 HP vs ClearFire-V 20 HP
Side-by-side comparison of two ClearFire-V sizes: capacity step, water volume and the mechanical figures that change between them.
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Cleaver-Brooks ClearFire-V 30 HP vs ClearFire-V 40 HP
Side-by-side comparison of two ClearFire-V sizes: capacity step, water volume and the mechanical figures that change between them.
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Cleaver-Brooks ClearFire-V 50 HP vs ClearFire-V 60 HP
Side-by-side comparison of two ClearFire-V sizes: capacity step, water volume and the mechanical figures that change between them.
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Takagi T-H3-DV-N vs T-H3S-DV-N
Side-by-side comparison of the two largest Takagi T-H3 indoor natural-gas tankless water heaters: capacity against UEF.
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Takagi T-H3S-DV-N vs T-H3J-DV-N
Side-by-side comparison of the two middle Takagi T-H3 indoor natural-gas tankless water heaters: the 180 MBH and 160 MBH steps.
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Takagi TCT-199I-N vs TCT-199O-N
Side-by-side comparison of the indoor and outdoor Takagi TCT-199 commercial tankless water heaters.
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Takagi T-D2-IN-N vs T-D2-OS-N
Side-by-side comparison of the indoor and outdoor versions of Takagi's T-D2 non-condensing tankless water heater.
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Takagi T-D2-IN-N vs TK-540P-NIH
Side-by-side comparison of Takagi's non-condensing T-D2 and condensing TK-540P indoor tankless water heaters.
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Takagi T-M32 vs T-M50-N
Side-by-side comparison of Takagi's two commercial tankless water heater series, the Mobius T-M32 and the T-M50.
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Takagi TK-540P-NIH vs TK-540P-NEH
Side-by-side comparison of the indoor and outdoor natural-gas TK-540P condensing tankless water heaters.
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Rheem RTGH-CS11i vs RTGH-CSR11i
Side-by-side comparison of the Rheem IKONIC Commercial base and recirculation tankless water heaters: identical ratings, different hot-water delivery behaviour.
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Rheem RTGH-CS11i vs Ruud RUTGH-CS11i
Side-by-side comparison of the Rheem and Ruud base commercial condensing tankless water heaters: identical platform, two brand labels.
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Camus DynaFlame DFH 0500 vs DFH 0750
Side-by-side comparison of the two smallest Camus DynaFlame non-condensing hydronic-heating boilers.
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Camus DynaFlame DFW 5000 vs DFW 6004
Side-by-side comparison of the two largest Camus DynaFlame non-condensing domestic-hot-water boilers.
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Camus DynaFlame 0502 (Heating) vs 0502 (DHW)
Side-by-side comparison of the smallest condensing Camus DynaFlame in its heating and domestic-hot-water certifications.
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AERCO Benchmark 750 vs Benchmark 1000
Side-by-side comparison of the two smallest AERCO Benchmark boilers: capacity, turndown, efficiency and physical differences.
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AERCO Benchmark 1000 vs Benchmark 1500
Side-by-side comparison of the AERCO Benchmark 1000 and 1500: where the capacity step changes efficiency, connections and installation weight.
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AERCO Benchmark 2500 vs Benchmark 3000
Side-by-side comparison of the mid-range AERCO Benchmark 2500 and 3000: same cabinet, different capacity and efficiency.
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AERCO Benchmark 5000 vs Benchmark 6000
Side-by-side comparison of the largest AERCO Benchmark boilers: same frame, different capacity and turndown.
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AERCO Innovation INN 600N vs INN 800N
Side-by-side comparison of the two smaller AERCO Innovation tankless water heaters: capacity, efficiency, turndown and condensate load.
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AERCO Innovation INN 800N vs INN 1060N
Side-by-side comparison of the AERCO Innovation 800N and 1060N: the step where vent options narrow and modulation deepens.
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AERCO Innovation INN 1060N vs INN 1350N
Side-by-side comparison of the two largest AERCO Innovation tankless water heaters: capacity, efficiency and turndown.
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AERCO Modulex EXT 450 vs Modulex EXT 600
Side-by-side comparison of the two smallest AERCO Modulex EXT boilers: module count, capacity, turndown and footprint.
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AERCO Modulex EXT 800 vs Modulex EXT 1100
Side-by-side comparison of the middle AERCO Modulex EXT boilers: capacity, module count and turndown.
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AERCO Modulex EXT 1500 vs Modulex EXT 2300
Side-by-side comparison of the larger AERCO Modulex EXT boilers: capacity, module count, turndown and footprint.
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AERCO Modulex EXT 2600 vs Modulex EXT 3000
Side-by-side comparison of the two largest AERCO Modulex EXT boilers: same frame, deeper turndown and more capacity.
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RBI Futera III 500 vs Futera III 750
Side-by-side comparison of the two smallest RBI Futera III copper-fin boilers: capacity, vent options and shipping weight.
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RBI Futera III 1000 vs Futera III 1500
Side-by-side comparison of the RBI Futera III 1000 and 1500: the step where cabinet, connections and flue sizes grow.
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RBI Futera III 1750 vs Futera III 2000
Side-by-side comparison of the two largest RBI Futera III copper-fin boilers: same footprint, different height and capacity.
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RBI Futera XLF 2500 vs Futera XLF 3000
Side-by-side comparison of the two smallest RBI Futera XLF copper-fin boilers: capacity and height on a shared footprint.
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RBI Futera XLF 3500 vs Futera XLF 4000
Side-by-side comparison of the mid-range RBI Futera XLF boilers: capacity on an unchanged connection set.
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RBI Futera XLF 5000 vs Futera XLF 6000
Side-by-side comparison of the RBI Futera XLF 5000 and 6000: the point where RBI changes cabinet and connection platform.
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RBI Futera XLF 8000 vs Futera XLF 10000
Side-by-side comparison of the two largest RBI Futera XLF boilers: the top of the copper-fin range.
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RBI Infinite Energy² 199 vs Infinite Energy² 399
Side-by-side comparison of the two smallest RBI Infinite Energy² condensing boilers: capacity, depth and connections.
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RBI Infinite Energy² 399 vs Infinite Energy² 500
Side-by-side comparison of the RBI Infinite Energy² 399 and 500: capacity without a physical step.
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RBI Infinite Energy² 750 vs Infinite Energy² 1000
Side-by-side comparison of the two largest RBI Infinite Energy² condensing boilers: capacity on a shared tall cabinet.
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P-K MODU-FIRE FD N750 vs N1000
Side-by-side comparison of the two smallest P-K MODU-FIRE FD boilers: same package, different capacity and flow.
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P-K MODU-FIRE FD N1500 vs N2000
Side-by-side comparison of the P-K MODU-FIRE FD N1500 and N2000: capacity, gas connection and flow.
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P-K MODU-FIRE FD N2500 vs N3000
Side-by-side comparison of the two largest P-K MODU-FIRE FD boilers: capacity, turndown and flow.
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P-K THERMIFIC VELOX N750 vs N1000
Side-by-side comparison of the two smallest P-K THERMIFIC VELOX boilers: same package, different capacity.
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P-K THERMIFIC VELOX N1500 vs N1700
Side-by-side comparison of the mid-range P-K THERMIFIC VELOX boilers: capacity, gas connection and flow.
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P-K THERMIFIC VELOX N1700 vs N2000
Side-by-side comparison of the two largest P-K THERMIFIC VELOX boilers: capacity and flow on a shared package.
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U.S. Boiler Company Alpine ALP080B vs ALP105B
Side-by-side comparison of the two smallest U.S. Boiler Company Alpine condensing boilers: capacity step, cabinet width and venting limits.
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U.S. Boiler Company ES2 ES23 vs ES25
Side-by-side comparison of the smallest and middle U.S. Boiler Company ES2 cast-iron water boilers: capacity, water content and vent step.
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U.S. Boiler Company K2WT-080B vs K2WT-180B
Side-by-side comparison of the smallest and largest standard K2 watertube condensing boilers: capacity, low-fire range, venting and cabinet size.
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U.S. Boiler Company Independence IN3I vs IN4I
Side-by-side comparison of the two smallest chimney-vented Independence gas steam boilers: steam capacity, chimney sizing and weight.
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New Yorker GHE-II GHE2-080 vs GHE2-150
Side-by-side comparison of the smallest and middle New Yorker GHE-II heating boilers: capacity, low-fire range, cabinet depth and weight.
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New Yorker GHE-II Combi GHE2C-136B vs GHE2C-200
Side-by-side comparison of the two New Yorker GHE-II Combi models: heating and DHW reach, delivery rates and cabinet size.
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New Yorker CG-F CG20F vs CG30F
Side-by-side comparison of the two smallest New Yorker CG-F cast-iron water boilers: capacity, altitude restriction and weight.
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New Yorker PVCG-C PVCG30CN vs PVCG40CN
Side-by-side comparison of the two smallest natural-gas New Yorker PVCG-C power-vented boilers: capacity, water content and weight.
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System 2000 EK1 Frontier 80,000 vs 150,000 BTU/hr
Side-by-side comparison of the smallest and largest EK1 Frontier rating rows: capacity against the AFUE the line gives up as input rises.
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System 2000 EK2 Frontier 175,000 vs 250,000 BTU/hr
Side-by-side comparison of the smallest and largest EK2 Frontier rating rows: output headroom against the AFUE printed for each.
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Accel CS EK1C-90 vs EK1C-120
Side-by-side comparison of the two Accel CS EK1C models: capacity and hot-water delivery against a fractional AFUE difference.
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Pennco 15B-060K vs 15B-120K
Side-by-side comparison of the smallest and mid-size Pennco 15B-K cast-iron water boilers: capacity, flue step and cabinet size.
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Pennco FSB-2 vs FSB-4
Side-by-side comparison of the smallest and mid-size Pennco FSB cast-iron water boilers: capacity, cabinet width and the 0.4-point AFUE difference.
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Pennco 15C-8D vs 15C-9D
Side-by-side comparison of the two Pennco 15C large cast-iron water boilers: one extra burner, capacity step and weight.
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Pennco 1603HSID vs 1606HSID
Side-by-side comparison of the smallest and mid-large Pennco 16 Series steam boilers: steam capacity, flue step, weight and the AFUE difference.
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Miura LX 50 vs LX 100
Side-by-side comparison of the two smallest Miura LX steam boilers: capacity, emissions and the published build codes.
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Miura LX 100 vs LX 150/200
Side-by-side comparison of the Miura LX 100 and LX 150/200: capacity headroom and the arrival of high-pressure steam.
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Miura LX 150/200 vs LX 250/300
Side-by-side comparison of the two largest Miura LX groups: the point where efficiency and NOx improve with size.
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Miura EX-100-07 vs EX-150-07
Side-by-side comparison of the two smallest Miura EX dual-fuel steam boilers: capacity, weight and venting.
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Miura EX-150-07 vs EX-200-07
Side-by-side comparison of the Miura EX-150-07 and EX-200-07: more output from the same physical package.
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Miura EX-200-07 vs EX-250-07
Side-by-side comparison of the Miura EX-200-07 and EX-250-07: the point where the cabinet grows taller.
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Miura EX-250-07 vs EX-300-07
Side-by-side comparison of the two largest standard Miura EX steam boilers: capacity and the larger connection envelope.
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Bryan BFIT 400 vs BFIT 650
Side-by-side comparison of the two smallest Bryan BFIT condensing boilers: capacity step and connection changes.
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Bryan BFIT 650 vs BFIT 1000
Side-by-side comparison of the Bryan BFIT 650 and BFIT 1000: more output from the same envelope.
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Bryan BFIT 1000 vs BFIT 1500
Side-by-side comparison of the Bryan BFIT 1000 and BFIT 1500: the point where efficiency, fuel and NOx ratings change.
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Bryan Free Flex 1000 vs Free Flex 1500
Side-by-side comparison of the two smallest Bryan Free Flex condensing boilers: capacity, connections and weight.
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Bryan Free Flex 1500 vs Free Flex 2000
Side-by-side comparison of the Bryan Free Flex 1500 and 2000: identical package, more capacity.
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Bryan Free Flex 2000 vs Free Flex 3000
Side-by-side comparison of the two largest documented Bryan Free Flex sizes: capacity and venting step.
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Hurst Series 200 100 HP vs 200 HP
Side-by-side comparison of two Hurst Series 200 sizes: the capacity step in the published table.
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Hurst Series 200 300 HP vs 500 HP
Side-by-side comparison of the Hurst Series 200 300 HP and 500 HP sizes: the upper-middle capacity step.
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Ideal Exalt Wall 110 vs 155
Side-by-side comparison of the two smaller Exalt Wall heat-only models: input range, minimum fire, capacity and the shared cabinet.
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Ideal Exalt Wall 155 vs 199
Side-by-side comparison of the two larger Exalt Wall heat-only models: input ceiling, minimum fire, venting options and capacity.
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Ideal Exalt Wall Combi 155 vs 199
Side-by-side comparison of the two Exalt Wall combi models: heating range, DHW delivery, venting options and weight.
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Ideal Exalt Floor 110 vs 155
Side-by-side comparison of the two smaller Exalt Floor models: input range, minimum fire, capacity and the shared floor-standing features.
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Ideal Exalt Floor 155 vs 199
Side-by-side comparison of the two larger Exalt Floor models: input ceiling, minimum fire, venting and capacity.
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Ideal Exalt Floor Combi 155 vs 199
Side-by-side comparison of the two Exalt Floor combi models: heating range, DHW delivery and the shared floor-standing equipment.
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Ideal Gallant Wall 250 vs 299
Side-by-side comparison of the two smaller Gallant Wall models: input range, turndown, chassis, connections and cascade use.
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Ideal Gallant Wall 299 vs 399
Side-by-side comparison of the two larger Gallant Wall models: shared chassis and minimum fire with the 399's additional headroom.
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Ideal Commodore Wall CB299W vs CB399W
Side-by-side comparison of the two smaller Commodore Wall commercial models: input range, modulation, printed efficiency and venting.
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Ideal Commodore Wall CB470W vs CB500W
Side-by-side comparison of the two largest Commodore Wall models: shared chassis and venting with different efficiency rows and capacity.
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Ideal Commodore Floor CB1250F vs CB2000F
Side-by-side comparison of the two smaller Commodore Floor models: input range, turndown, efficiency, dimensions and the shared connection scheme.
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Ideal Commodore Floor CB3000F vs CB4000F
Side-by-side comparison of the two largest Commodore Floor models: input range, printed efficiency, dimensions and venting.
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American Standard AGBWF090A93AV vs AGBWF130A94AV
Side-by-side comparison of the two smallest natural draft American Standard gas boilers from the archived official 2008 rating table: 90,000 against 130,000 BTU/hr input in the same cabinet depth.
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American Standard AGBWF130A94AV vs AGBWF173A95AV
Side-by-side comparison of two mid-range natural draft American Standard gas boilers that share one cabinet: 130,000 against 173,000 BTU/hr input.
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American Standard AGBWF173A95AV vs AGBWF215A96AV
Side-by-side comparison of the two largest natural draft American Standard gas boilers: the 215 is the only size that steps up the cabinet width.
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American Standard AGRWF130A94A0 vs AGBWF130A94AV
Side-by-side comparison of the direct vent and natural draft American Standard gas boilers at the same 130,000 BTU/hr input: the direct vent model leads on AFUE.
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Peerless PureFire PF-50 vs PF-80
How the Peerless PureFire PF-50 and Peerless PureFire PF-80 compare within the Peerless Boilers PureFire line, using the ratings and installation data published in the cited official sources.
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Peerless PureFire PF-80 vs PF-110
Side-by-side comparison of the Peerless PureFire PF-80 and Peerless PureFire PF-110 from the Peerless Boilers PureFire line: published ratings, efficiency, physical data and the differences that separate the two.
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Peerless PureFire PF-110 vs PF-140
How the Peerless PureFire PF-110 and Peerless PureFire PF-140 compare within the Peerless Boilers PureFire line, using the ratings and installation data published in the cited official sources.
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Peerless PureFire PF-140 vs PF-200
How the Peerless PureFire PF-140 and Peerless PureFire PF-200 compare within the Peerless Boilers PureFire line, using the ratings and installation data published in the cited official sources.
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Peerless Series PBC PBC-34 vs PBC-40
How the Peerless Series PBC PBC-34 and Peerless Series PBC PBC-40 compare within the Peerless Boilers Series PBC (Peerless Combi) line, using the ratings and installation data published in the cited official sources.
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Peerless Series PBC PBC-40 vs PBC-52
How the Peerless Series PBC PBC-40 and Peerless Series PBC PBC-52 compare within the Peerless Boilers Series PBC (Peerless Combi) line, using the ratings and installation data published in the cited official sources.
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Peerless Series PBC PBC-34 vs PBC-52
Side-by-side comparison of the Peerless Series PBC PBC-34 and Peerless Series PBC PBC-52 from the Peerless Boilers Series PBC (Peerless Combi) line: published ratings, efficiency, physical data and the differences that separate the two.
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Peerless Series MI-e MI-e-03 vs MI-e-04
How the Peerless Series MI-e MI-e-03 and Peerless Series MI-e MI-e-04 compare within the Peerless Boilers Series MI-e line, using the ratings and installation data published in the cited official sources.
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Peerless Series MI-e MI-e-04 vs MI-e-05
How the Peerless Series MI-e MI-e-04 and Peerless Series MI-e MI-e-05 compare within the Peerless Boilers Series MI-e line, using the ratings and installation data published in the cited official sources.
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Peerless Series MI-e MI-e-05 vs MI-e-06
How the Peerless Series MI-e MI-e-05 and Peerless Series MI-e MI-e-06 compare within the Peerless Boilers Series MI-e line, using the ratings and installation data published in the cited official sources.
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Peerless Series MI-e MI-e-06 vs MI-e-07
How the Peerless Series MI-e MI-e-06 and Peerless Series MI-e MI-e-07 compare within the Peerless Boilers Series MI-e line, using the ratings and installation data published in the cited official sources.
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Peerless Series MI MI-03 vs MI-04
How the Peerless Series MI MI-03 and Peerless Series MI MI-04 compare within the Peerless Boilers Series MI line, using the ratings and installation data published in the cited official sources.
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Peerless Series MI MI-04 vs MI-05
How the Peerless Series MI MI-04 and Peerless Series MI MI-05 compare within the Peerless Boilers Series MI line, using the ratings and installation data published in the cited official sources.
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Peerless Series MI MI-05 vs MI-06
How the Peerless Series MI MI-05 and Peerless Series MI MI-06 compare within the Peerless Boilers Series MI line, using the ratings and installation data published in the cited official sources.
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Peerless Series MI MI-06 vs MI-07
How the Peerless Series MI MI-06 and Peerless Series MI MI-07 compare within the Peerless Boilers Series MI line, using the ratings and installation data published in the cited official sources.
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Peerless Series MIHII MIHII-03 vs MIHII-04
How the Peerless Series MIHII MIHII-03 and Peerless Series MIHII MIHII-04 compare within the Peerless Boilers Series MIHII line, using the ratings and installation data published in the cited official sources.
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Peerless Series MIHII MIHII-04 vs MIHII-05
How the Peerless Series MIHII MIHII-04 and Peerless Series MIHII MIHII-05 compare within the Peerless Boilers Series MIHII line, using the ratings and installation data published in the cited official sources.
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Peerless Series MIHII MIHII-05 vs MIHII-06
How the Peerless Series MIHII MIHII-05 and Peerless Series MIHII MIHII-06 compare within the Peerless Boilers Series MIHII line, using the ratings and installation data published in the cited official sources.
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Peerless Series MIHII MIHII-03 vs MIHII-05
Side-by-side comparison of the Peerless Series MIHII MIHII-03 and Peerless Series MIHII MIHII-05 from the Peerless Boilers Series MIHII line: published ratings, efficiency, physical data and the differences that separate the two.
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Peerless Cast 92-2 vs Cast 92-4
Side-by-side comparison of the Peerless Cast 92-2 and Peerless Cast 92-4 from the Peerless Boilers Cast 92 line: published ratings, efficiency, physical data and the differences that separate the two.
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Peerless Series CC CC-03 vs CC-04
How the Peerless Series CC CC-03 and Peerless Series CC CC-04 compare within the Peerless Boilers Series CC line, using the ratings and installation data published in the cited official sources.
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Peerless Series CC CC-04 vs CC-05
How the Peerless Series CC CC-04 and Peerless Series CC CC-05 compare within the Peerless Boilers Series CC line, using the ratings and installation data published in the cited official sources.
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Peerless Series CC CC-05 vs CC-06
How the Peerless Series CC CC-05 and Peerless Series CC CC-06 compare within the Peerless Boilers Series CC line, using the ratings and installation data published in the cited official sources.
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Peerless Series CC CC-06 vs CC-07
How the Peerless Series CC CC-06 and Peerless Series CC CC-07 compare within the Peerless Boilers Series CC line, using the ratings and installation data published in the cited official sources.
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Peerless Series GM GM-e-05 vs GM-e-06
How the Peerless Series GM GM-e-05 and Peerless Series GM GM-e-06 compare within the Peerless Boilers Series GM line, using the ratings and installation data published in the cited official sources.
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Peerless Series GM GM-e-06 vs GM-07
How the Peerless Series GM GM-e-06 and Peerless Series GM GM-07 compare within the Peerless Boilers Series GM line, using the ratings and installation data published in the cited official sources.
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Peerless Series GM GM-07 vs GM-08
How the Peerless Series GM GM-07 and Peerless Series GM GM-08 compare within the Peerless Boilers Series GM line, using the ratings and installation data published in the cited official sources.
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Peerless Series GM GM-e-05 vs GM-07
Side-by-side comparison of the Peerless Series GM GM-e-05 and Peerless Series GM GM-07 from the Peerless Boilers Series GM line: published ratings, efficiency, physical data and the differences that separate the two.
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Peerless Series TCII TCII-04 vs TCII-05
How the Peerless Series TCII TCII-04 and Peerless Series TCII TCII-05 compare within the Peerless Boilers Series TCII line, using the ratings and installation data published in the cited official sources.
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Peerless Series TCII TCII-05 vs TCII-06
How the Peerless Series TCII TCII-05 and Peerless Series TCII TCII-06 compare within the Peerless Boilers Series TCII line, using the ratings and installation data published in the cited official sources.
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Peerless Series TCII TCII-06 vs TCII-07
How the Peerless Series TCII TCII-06 and Peerless Series TCII TCII-07 compare within the Peerless Boilers Series TCII line, using the ratings and installation data published in the cited official sources.
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Peerless Series TCII TCII-07 vs TCII-08
How the Peerless Series TCII TCII-07 and Peerless Series TCII TCII-08 compare within the Peerless Boilers Series TCII line, using the ratings and installation data published in the cited official sources.
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IBC VX 110 vs IBC VX 199
How the IBC VX 110 and IBC VX 199 compare within the IBC Technologies VX Series line, using the ratings and installation data published in the cited official sources.
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IBC SFC 99-1 Superflow vs IBC SFC 199-1 Superflow
How the IBC SFC 99-1 Superflow and IBC SFC 199-1 Superflow compare within the IBC Technologies Superflow SFC-1 Combi line, using the ratings and installation data published in the cited official sources.
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IBC EX 400 vs IBC EX 700
How the IBC EX 400 and IBC EX 700 compare within the IBC Technologies EX Series line, using the ratings and installation data published in the cited official sources.
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IBC IFIRE-B 300 vs IFIRE-B 400
How the IBC IFIRE-B 300 and IBC IFIRE-B 400 compare within the IBC Technologies IFIRE-B line, using the ratings and installation data published in the cited official sources.
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IBC IFIRE-B 400 vs IFIRE-B 500
How the IBC IFIRE-B 400 and IBC IFIRE-B 500 compare within the IBC Technologies IFIRE-B line, using the ratings and installation data published in the cited official sources.
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IBC IFIRE-B 500 vs IFIRE-B 650
Side-by-side comparison of the IBC IFIRE-B 500 and IBC IFIRE-B 650 from the IBC Technologies IFIRE-B line: published ratings, efficiency, physical data and the differences that separate the two.
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IBC IFIRE-B 650 vs IFIRE-B 800
How the IBC IFIRE-B 650 and IBC IFIRE-B 800 compare within the IBC Technologies IFIRE-B line, using the ratings and installation data published in the cited official sources.
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A. O. Smith Burkay HW-300 vs HW-399
Side-by-side comparison of the A. O. Smith Burkay HW-300 and A. O. Smith Burkay HW-399 from the A. O. Smith Conservationist Burkay (hot-water boilers) line: published ratings, efficiency, physical data and the differences that separate the two.
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A. O. Smith Burkay HW-399 vs HW-420
How the A. O. Smith Burkay HW-399 and A. O. Smith Burkay HW-420 compare within the A. O. Smith Conservationist Burkay (hot-water boilers) line, using the ratings and installation data published in the cited official sources.
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A. O. Smith Burkay Genesis GWH-1000 vs GWH-1300
How the A. O. Smith Burkay Genesis GWH-1000 and A. O. Smith Burkay Genesis GWH-1300 compare within the A. O. Smith Burkay Genesis (circulating water heaters, discontinued) line, using the ratings and installation data published in the cited official sources.
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A. O. Smith Burkay Genesis GWH-1300 vs GWH-1500
Side-by-side comparison of the A. O. Smith Burkay Genesis GWH-1300 and A. O. Smith Burkay Genesis GWH-1500 from the A. O. Smith Burkay Genesis (circulating water heaters, discontinued) line: published ratings, efficiency, physical data and the differences that separate the two.
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AERCO Innovation INN 600N vs INN 1060N
How the AERCO Innovation INN 600N and AERCO Innovation INN 1060N compare within the AERCO (Watts) Innovation line, using the ratings and installation data published in the cited official sources.
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Bosch Greenstar ZBR 35-3A vs ZWB 35-3A
How the Bosch Greenstar ZBR 35-3A and Bosch Greenstar ZWB 35-3A compare within the Bosch Thermotechnology Greenstar Wall (ZBR/ZWB) line, using the ratings and installation data published in the cited official sources.
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Buderus GB142-24 kW vs Buderus GB142-45 kW
How the Buderus GB142-24 kW and Buderus GB142-45 kW compare within the Bosch Thermotechnology Buderus GB142 line, using the ratings and installation data published in the cited official sources.
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Buderus SSB120 vs Buderus SSB160
Side-by-side comparison of the Buderus SSB120 and Buderus SSB160 from the Bosch Thermotechnology Buderus SSB (85-512, discontinued) line: published ratings, efficiency, physical data and the differences that separate the two.
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Buderus GB312/90 vs Buderus GB312/120
Side-by-side comparison of the Buderus GB312/90 and Buderus GB312/120 from the Bosch Thermotechnology Buderus GB312 (Logano plus GB312) line: published ratings, efficiency, physical data and the differences that separate the two.
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Buderus GB312/120 vs Buderus GB312/160
Side-by-side comparison of the Buderus GB312/120 and Buderus GB312/160 from the Bosch Thermotechnology Buderus GB312 (Logano plus GB312) line: published ratings, efficiency, physical data and the differences that separate the two.
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Buderus G124X/18 vs Buderus G124X/25
Side-by-side comparison of the Buderus G124X/18 and Buderus G124X/25 from the Bosch Thermotechnology Buderus G124X (Logano G124X II/SP) line: published ratings, efficiency, physical data and the differences that separate the two.
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Buderus G124X/25 vs Buderus G124X/32
Side-by-side comparison of the Buderus G124X/25 and Buderus G124X/32 from the Bosch Thermotechnology Buderus G124X (Logano G124X II/SP) line: published ratings, efficiency, physical data and the differences that separate the two.
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Buderus GA124/17 vs Buderus GA124/23
How the Buderus GA124/17 and Buderus GA124/23 compare within the Bosch Thermotechnology Buderus GA124 (Logano GA124) line, using the ratings and installation data published in the cited official sources.
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Buderus GA124/23 vs Buderus GA124/30
Side-by-side comparison of the Buderus GA124/23 and Buderus GA124/30 from the Bosch Thermotechnology Buderus GA124 (Logano GA124) line: published ratings, efficiency, physical data and the differences that separate the two.
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Buderus GC124 II 18/3 vs II 25/4
How the Buderus GC124 II 18/3 and Buderus GC124 II 25/4 compare within the Bosch Thermotechnology Buderus GC124 II (Logano GC 124 II) line, using the ratings and installation data published in the cited official sources.
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Buderus GC124 II 25/4 vs II 32/5
How the Buderus GC124 II 25/4 and Buderus GC124 II 32/5 compare within the Bosch Thermotechnology Buderus GC124 II (Logano GC 124 II) line, using the ratings and installation data published in the cited official sources.
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Buderus GC144 II 18/3 vs II 25/4
How the Buderus GC144 II 18/3 and Buderus GC144 II 25/4 compare within the Bosch Thermotechnology Buderus GC144 II (Logano GC 144 II) line, using the ratings and installation data published in the cited official sources.
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Buderus GC144 II 25/4 vs II 32/5
How the Buderus GC144 II 25/4 and Buderus GC144 II 32/5 compare within the Bosch Thermotechnology Buderus GC144 II (Logano GC 144 II) line, using the ratings and installation data published in the cited official sources.
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Buderus G234X/38/5 vs Buderus G234X/45/5
Side-by-side comparison of the Buderus G234X/38/5 and Buderus G234X/45/5 from the Bosch Thermotechnology Buderus G234X (Logano G234X) line: published ratings, efficiency, physical data and the differences that separate the two.
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Buderus G234X/45/5 vs Buderus G234X/55/6
Side-by-side comparison of the Buderus G234X/45/5 and Buderus G234X/55/6 from the Bosch Thermotechnology Buderus G234X (Logano G234X) line: published ratings, efficiency, physical data and the differences that separate the two.
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Buderus G234X/55/6 vs Buderus G234X/64/7
How the Buderus G234X/55/6 and Buderus G234X/64/7 compare within the Bosch Thermotechnology Buderus G234X (Logano G234X) line, using the ratings and installation data published in the cited official sources.
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Buderus G334X/73 vs Buderus G334X/92
How the Buderus G334X/73 and Buderus G334X/92 compare within the Bosch Thermotechnology Buderus G334X (Logano G334X) line, using the ratings and installation data published in the cited official sources.
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Buderus G334X/92 vs Buderus G334X/116
How the Buderus G334X/92 and Buderus G334X/116 compare within the Bosch Thermotechnology Buderus G334X (Logano G334X) line, using the ratings and installation data published in the cited official sources.
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Buderus G334X/116 vs Buderus G334X/132
Side-by-side comparison of the Buderus G334X/116 and Buderus G334X/132 from the Bosch Thermotechnology Buderus G334X (Logano G334X) line: published ratings, efficiency, physical data and the differences that separate the two.
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Buderus G315/5 vs Buderus G315/6
How the Buderus G315/5 and Buderus G315/6 compare within the Bosch Thermotechnology Buderus G315 (Logano G315) line, using the ratings and installation data published in the cited official sources.
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Buderus G315/6 vs Buderus G315/7
How the Buderus G315/6 and Buderus G315/7 compare within the Bosch Thermotechnology Buderus G315 (Logano G315) line, using the ratings and installation data published in the cited official sources.
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Buderus G315/7 vs Buderus G315/8
How the Buderus G315/7 and Buderus G315/8 compare within the Bosch Thermotechnology Buderus G315 (Logano G315) line, using the ratings and installation data published in the cited official sources.
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Buderus G515/240 vs Buderus G515/295
Side-by-side comparison of the Buderus G515/240 and Buderus G515/295 from the Bosch Thermotechnology Buderus G515 (Logano G515) line: published ratings, efficiency, physical data and the differences that separate the two.
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Buderus G515/295 vs Buderus G515/350
Side-by-side comparison of the Buderus G515/295 and Buderus G515/350 from the Bosch Thermotechnology Buderus G515 (Logano G515) line: published ratings, efficiency, physical data and the differences that separate the two.
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Buderus G515/350 vs Buderus G515/400
Side-by-side comparison of the Buderus G515/350 and Buderus G515/400 from the Bosch Thermotechnology Buderus G515 (Logano G515) line: published ratings, efficiency, physical data and the differences that separate the two.
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Buderus G615/570 vs Buderus G615/660
Side-by-side comparison of the Buderus G615/570 and Buderus G615/660 from the Bosch Thermotechnology Buderus G615 (Logano G615) line: published ratings, efficiency, physical data and the differences that separate the two.
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Buderus G615/660 vs Buderus G615/740
How the Buderus G615/660 and Buderus G615/740 compare within the Bosch Thermotechnology Buderus G615 (Logano G615) line, using the ratings and installation data published in the cited official sources.
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Buderus G615/740 vs Buderus G615/820
How the Buderus G615/740 and Buderus G615/820 compare within the Bosch Thermotechnology Buderus G615 (Logano G615) line, using the ratings and installation data published in the cited official sources.
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Buderus SB625WS 160 vs SB625WS 220
How the Buderus SB625WS 160 and Buderus SB625WS 220 compare within the Bosch Thermotechnology Buderus SB625WS line, using the ratings and installation data published in the cited official sources.
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Buderus SB625WS 220 vs SB625WS 290
How the Buderus SB625WS 220 and Buderus SB625WS 290 compare within the Bosch Thermotechnology Buderus SB625WS line, using the ratings and installation data published in the cited official sources.
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Buderus SB625WS 290 vs SB625WS 370
How the Buderus SB625WS 290 and Buderus SB625WS 370 compare within the Bosch Thermotechnology Buderus SB625WS line, using the ratings and installation data published in the cited official sources.
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Buderus SB745WS 1050 vs SB745WS 1300
Side-by-side comparison of the Buderus SB745WS 1050 and Buderus SB745WS 1300 from the Bosch Thermotechnology Buderus SB745WS line: published ratings, efficiency, physical data and the differences that separate the two.
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Buderus SB745WS 1300 vs SB745WS 1550
How the Buderus SB745WS 1300 and Buderus SB745WS 1550 compare within the Bosch Thermotechnology Buderus SB745WS line, using the ratings and installation data published in the cited official sources.
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Buderus SB745WS 1050 vs SB745WS 1550
How the Buderus SB745WS 1050 and Buderus SB745WS 1550 compare within the Bosch Thermotechnology Buderus SB745WS line, using the ratings and installation data published in the cited official sources.
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Bryan BFIT 1500 vs BFIT 2000
Side-by-side comparison of the Bryan BFIT 1500 and Bryan BFIT 2000 from the Bryan Boilers BFIT line: published ratings, efficiency, physical data and the differences that separate the two.
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Bryan Free Flex 1000 vs Flex 2000
How the Bryan Free Flex 1000 and Bryan Free Flex 2000 compare within the Bryan Boilers Free Flex (FF) Series line, using the ratings and installation data published in the cited official sources.
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Burnham Independence IN3I vs Burnham SteamMax STMX075
How the Burnham Independence IN3I and Burnham SteamMax STMX075 compare within the Burnham SteamMax & Independence (gas steam) line, using the ratings and installation data published in the cited official sources.
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Burnham SteamMax STMX075 vs STMX100
How the Burnham SteamMax STMX075 and Burnham SteamMax STMX100 compare within the Burnham SteamMax & Independence (gas steam) line, using the ratings and installation data published in the cited official sources.
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Burnham SteamMax STMX100 vs Burnham Independence IN4I
How the Burnham SteamMax STMX100 and Burnham Independence IN4I compare within the Burnham SteamMax & Independence (gas steam) line, using the ratings and installation data published in the cited official sources.
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Burnham Independence IN4I vs Burnham SteamMax STMX125
Side-by-side comparison of the Burnham Independence IN4I and Burnham SteamMax STMX125 from the Burnham SteamMax & Independence (gas steam) line: published ratings, efficiency, physical data and the differences that separate the two.
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Burnham Series 2 202E vs 2 203E
How the Burnham Series 2 202E and Burnham Series 2 203E compare within the Burnham Series 2 line, using the ratings and installation data published in the cited official sources.
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Burnham Series 2 203E vs 2 204E
How the Burnham Series 2 203E and Burnham Series 2 204E compare within the Burnham Series 2 line, using the ratings and installation data published in the cited official sources.
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Burnham Series 2 204E vs 2 205E
How the Burnham Series 2 204E and Burnham Series 2 205E compare within the Burnham Series 2 line, using the ratings and installation data published in the cited official sources.
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Burnham Series 2 205E vs 2 206E
How the Burnham Series 2 205E and Burnham Series 2 206E compare within the Burnham Series 2 line, using the ratings and installation data published in the cited official sources.
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Camus Dynaforce DR300 vs DR350
How the Camus Dynaforce DR300 and Camus Dynaforce DR350 compare within the Camus Hydronics Dynaforce Series line, using the ratings and installation data published in the cited official sources.
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Camus Dynaforce DR350 vs DR400
Side-by-side comparison of the Camus Dynaforce DR350 and Camus Dynaforce DR400 from the Camus Hydronics Dynaforce Series line: published ratings, efficiency, physical data and the differences that separate the two.
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Camus Dynaforce DR400 vs DR500
How the Camus Dynaforce DR400 and Camus Dynaforce DR500 compare within the Camus Hydronics Dynaforce Series line, using the ratings and installation data published in the cited official sources.
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Camus Dynaforce DR500 vs DR600
How the Camus Dynaforce DR500 and Camus Dynaforce DR600 compare within the Camus Hydronics Dynaforce Series line, using the ratings and installation data published in the cited official sources.
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Camus DynaFlame DFH 0500 (Non-Condensing Heating) vs 0501 (Near-Condensing Heating)
Side-by-side comparison of the Camus DynaFlame DFH 0500 (Non-Condensing Heating) and Camus DynaFlame DFH 0501 (Near-Condensing Heating) from the Camus Hydronics DynaFlame Series line: published ratings, efficiency, physical data and the differences that separate the two.
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Crown Aruba 4 AWR038E vs AWR070E
Side-by-side comparison of the Crown Aruba 4 AWR038E and Crown Aruba 4 AWR070E from the Crown Boiler Co. Aruba 4 line: published ratings, efficiency, physical data and the differences that separate the two.
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Crown Aruba 6 AWR038C vs AWR070C
Side-by-side comparison of the Crown Aruba 6 AWR038C and Crown Aruba 6 AWR070C from the Crown Boiler Co. Aruba 6 line: published ratings, efficiency, physical data and the differences that separate the two.
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Crown Aruba 6 AWR070C vs AWR105C
How the Crown Aruba 6 AWR070C and Crown Aruba 6 AWR105C compare within the Crown Boiler Co. Aruba 6 line, using the ratings and installation data published in the cited official sources.
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Crown Aruba 6 AWR105C vs AWR140C
How the Crown Aruba 6 AWR105C and Crown Aruba 6 AWR140C compare within the Crown Boiler Co. Aruba 6 line, using the ratings and installation data published in the cited official sources.
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Crown Aruba 6 AWR140C vs AWR175C
Side-by-side comparison of the Crown Aruba 6 AWR140C and Crown Aruba 6 AWR175C from the Crown Boiler Co. Aruba 6 line: published ratings, efficiency, physical data and the differences that separate the two.
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Crown Bali 3 BWF063CL vs BWF070CN
Side-by-side comparison of the Crown Bali 3 BWF063CL and Crown Bali 3 BWF070CN from the Crown Boiler Co. Bali 3 line: published ratings, efficiency, physical data and the differences that separate the two.
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Crown Bali 3 BWF070CN vs BWF094CL
Side-by-side comparison of the Crown Bali 3 BWF070CN and Crown Bali 3 BWF094CL from the Crown Boiler Co. Bali 3 line: published ratings, efficiency, physical data and the differences that separate the two.
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Crown Bali 3 BWF094CL vs BWF105CN
How the Crown Bali 3 BWF094CL and Crown Bali 3 BWF105CN compare within the Crown Boiler Co. Bali 3 line, using the ratings and installation data published in the cited official sources.
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Crown Bali 3 BWF105CN vs BWF126CL
How the Crown Bali 3 BWF105CN and Crown Bali 3 BWF126CL compare within the Crown Boiler Co. Bali 3 line, using the ratings and installation data published in the cited official sources.
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Crown Raptor RPTR085HB vs RPTR110HB
How the Crown Raptor RPTR085HB and Crown Raptor RPTR110HB compare within the Crown Boiler Co. Raptor line, using the ratings and installation data published in the cited official sources.
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Crown Raptor RPTR110HB vs RPTR155CB (Combi)
Side-by-side comparison of the Crown Raptor RPTR110HB and Crown Raptor RPTR155CB (Combi) from the Crown Boiler Co. Raptor line: published ratings, efficiency, physical data and the differences that separate the two.
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Crown Raptor RPTR155CB (Combi) vs RPTR155HB
How the Crown Raptor RPTR155CB (Combi) and Crown Raptor RPTR155HB compare within the Crown Boiler Co. Raptor line, using the ratings and installation data published in the cited official sources.
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Crown Raptor RPTR155HB vs RPTR205HB
Side-by-side comparison of the Crown Raptor RPTR155HB and Crown Raptor RPTR205HB from the Crown Boiler Co. Raptor line: published ratings, efficiency, physical data and the differences that separate the two.
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Crown Bimini BWC070 vs BWC090
Side-by-side comparison of the Crown Bimini BWC070 and Crown Bimini BWC090 from the Crown Boiler Co. Bimini (legacy) line: published ratings, efficiency, physical data and the differences that separate the two.
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Crown Bimini BWC090 vs BWC120
Side-by-side comparison of the Crown Bimini BWC090 and Crown Bimini BWC120 from the Crown Boiler Co. Bimini (legacy) line: published ratings, efficiency, physical data and the differences that separate the two.
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Crown Bimini BWC120 vs BWC150
How the Crown Bimini BWC120 and Crown Bimini BWC150 compare within the Crown Boiler Co. Bimini (legacy) line, using the ratings and installation data published in the cited official sources.
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Crown Bimini BWC150 vs BWC151
How the Crown Bimini BWC150 and Crown Bimini BWC151 compare within the Crown Boiler Co. Bimini (legacy) line, using the ratings and installation data published in the cited official sources.
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Crown Cayman CWI103 vs CWI138
Side-by-side comparison of the Crown Cayman CWI103 and Crown Cayman CWI138 from the Crown Boiler Co. Cayman (legacy) line: published ratings, efficiency, physical data and the differences that separate the two.
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Crown Cayman CWI138 vs CWI172
Side-by-side comparison of the Crown Cayman CWI138 and Crown Cayman CWI172 from the Crown Boiler Co. Cayman (legacy) line: published ratings, efficiency, physical data and the differences that separate the two.
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Crown Cayman CWI172 vs CWI207
How the Crown Cayman CWI172 and Crown Cayman CWI207 compare within the Crown Boiler Co. Cayman (legacy) line, using the ratings and installation data published in the cited official sources.
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Crown Cayman CWI207 vs CWI241
Side-by-side comparison of the Crown Cayman CWI207 and Crown Cayman CWI241 from the Crown Boiler Co. Cayman (legacy) line: published ratings, efficiency, physical data and the differences that separate the two.
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Crown Bermuda 2 BSI069B vs BSI103B
How the Crown Bermuda 2 BSI069B and Crown Bermuda 2 BSI103B compare within the Crown Boiler Co. Bermuda 2 (BSIB) line, using the ratings and installation data published in the cited official sources.
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Crown Bermuda 2 BSI103B vs BSI138B
Side-by-side comparison of the Crown Bermuda 2 BSI103B and Crown Bermuda 2 BSI138B from the Crown Boiler Co. Bermuda 2 (BSIB) line: published ratings, efficiency, physical data and the differences that separate the two.
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Crown Bermuda 2 BSI138B vs BSI172B
Side-by-side comparison of the Crown Bermuda 2 BSI138B and Crown Bermuda 2 BSI172B from the Crown Boiler Co. Bermuda 2 (BSIB) line: published ratings, efficiency, physical data and the differences that separate the two.
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Crown Bermuda 2 BSI172B vs BSI207B
How the Crown Bermuda 2 BSI172B and Crown Bermuda 2 BSI207B compare within the Crown Boiler Co. Bermuda 2 (BSIB) line, using the ratings and installation data published in the cited official sources.
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Crown Bermuda BSI069 vs BSI103
How the Crown Bermuda BSI069 and Crown Bermuda BSI103 compare within the Crown Boiler Co. Bermuda (legacy) line, using the ratings and installation data published in the cited official sources.
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Crown Bermuda BSI103 vs BSI138
Side-by-side comparison of the Crown Bermuda BSI103 and Crown Bermuda BSI138 from the Crown Boiler Co. Bermuda (legacy) line: published ratings, efficiency, physical data and the differences that separate the two.
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Crown Bermuda BSI138 vs BSI172
Side-by-side comparison of the Crown Bermuda BSI138 and Crown Bermuda BSI172 from the Crown Boiler Co. Bermuda (legacy) line: published ratings, efficiency, physical data and the differences that separate the two.
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Crown Bermuda BSI172 vs BSI207
How the Crown Bermuda BSI172 and Crown Bermuda BSI207 compare within the Crown Boiler Co. Bermuda (legacy) line, using the ratings and installation data published in the cited official sources.
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De Dietrich MCA Pro 45 vs Pro 65
Side-by-side comparison of the De Dietrich MCA Pro 45 and De Dietrich MCA Pro 65 from the De Dietrich MCA Pro Series line: published ratings, efficiency, physical data and the differences that separate the two.
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De Dietrich MCA Pro 90 vs Pro 115
Side-by-side comparison of the De Dietrich MCA Pro 90 and De Dietrich MCA Pro 115 from the De Dietrich MCA Pro Series line: published ratings, efficiency, physical data and the differences that separate the two.
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Dunkirk WPSB-3D vs Dunkirk WPSB-4D
How the Dunkirk WPSB-3D and Dunkirk WPSB-4D compare within the Dunkirk Boilers WPSB Series 4 line, using the ratings and installation data published in the cited official sources.
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Dunkirk WPSB-4D vs Dunkirk WPSB-5D
How the Dunkirk WPSB-4D and Dunkirk WPSB-5D compare within the Dunkirk Boilers WPSB Series 4 line, using the ratings and installation data published in the cited official sources.
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Dunkirk WPSB-5D vs Dunkirk WPSB-6D
How the Dunkirk WPSB-5D and Dunkirk WPSB-6D compare within the Dunkirk Boilers WPSB Series 4 line, using the ratings and installation data published in the cited official sources.
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Dunkirk WPSB-6D vs Dunkirk WPSB-7D
How the Dunkirk WPSB-6D and Dunkirk WPSB-7D compare within the Dunkirk Boilers WPSB Series 4 line, using the ratings and installation data published in the cited official sources.
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Dunkirk DXL-060K vs Dunkirk DXL-095K
Side-by-side comparison of the Dunkirk DXL-060K and Dunkirk DXL-095K from the Dunkirk Boilers DXL-K Series line: published ratings, efficiency, physical data and the differences that separate the two.
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Dunkirk DXL-095K vs Dunkirk DXL-120K
How the Dunkirk DXL-095K and Dunkirk DXL-120K compare within the Dunkirk Boilers DXL-K Series line, using the ratings and installation data published in the cited official sources.
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Dunkirk DXL-120K vs Dunkirk DXL-150K
How the Dunkirk DXL-120K and Dunkirk DXL-150K compare within the Dunkirk Boilers DXL-K Series line, using the ratings and installation data published in the cited official sources.
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Dunkirk DXL-150K vs Dunkirk DXL-175K
How the Dunkirk DXL-150K and Dunkirk DXL-175K compare within the Dunkirk Boilers DXL-K Series line, using the ratings and installation data published in the cited official sources.
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Dunkirk XEB-2 vs Dunkirk XEB-3
How the Dunkirk XEB-2 and Dunkirk XEB-3 compare within the Dunkirk Boilers XEB Series 4 line, using the ratings and installation data published in the cited official sources.
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Dunkirk XEB-3 vs Dunkirk XEB-4
How the Dunkirk XEB-3 and Dunkirk XEB-4 compare within the Dunkirk Boilers XEB Series 4 line, using the ratings and installation data published in the cited official sources.
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Dunkirk XEB-4 vs Dunkirk XEB-5
How the Dunkirk XEB-4 and Dunkirk XEB-5 compare within the Dunkirk Boilers XEB Series 4 line, using the ratings and installation data published in the cited official sources.
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Dunkirk XEB-5 vs Dunkirk XEB-6
How the Dunkirk XEB-5 and Dunkirk XEB-6 compare within the Dunkirk Boilers XEB Series 4 line, using the ratings and installation data published in the cited official sources.
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Dunkirk PSB-3D vs Dunkirk PSB-4D
How the Dunkirk PSB-3D and Dunkirk PSB-4D compare within the Dunkirk Boilers PSB Plymouth Steam Boiler line, using the ratings and installation data published in the cited official sources.
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Dunkirk PSB-4D vs Dunkirk PSB-5D
How the Dunkirk PSB-4D and Dunkirk PSB-5D compare within the Dunkirk Boilers PSB Plymouth Steam Boiler line, using the ratings and installation data published in the cited official sources.
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Dunkirk PSB-5D vs Dunkirk PSB-6D
How the Dunkirk PSB-5D and Dunkirk PSB-6D compare within the Dunkirk Boilers PSB Plymouth Steam Boiler line, using the ratings and installation data published in the cited official sources.
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Dunkirk PSB-6D vs Dunkirk PSB-7D
How the Dunkirk PSB-6D and Dunkirk PSB-7D compare within the Dunkirk Boilers PSB Plymouth Steam Boiler line, using the ratings and installation data published in the cited official sources.
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Dunkirk Q90-50 vs Dunkirk Q90-75
How the Dunkirk Q90-50 and Dunkirk Q90-75 compare within the Dunkirk Boilers Q90 (Series 4 and Q90-200 Series II) line, using the ratings and installation data published in the cited official sources.
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Dunkirk Q90-75 vs Dunkirk Q90-100
How the Dunkirk Q90-75 and Dunkirk Q90-100 compare within the Dunkirk Boilers Q90 (Series 4 and Q90-200 Series II) line, using the ratings and installation data published in the cited official sources.
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Dunkirk Q90-100 vs Dunkirk Q90-125
How the Dunkirk Q90-100 and Dunkirk Q90-125 compare within the Dunkirk Boilers Q90 (Series 4 and Q90-200 Series II) line, using the ratings and installation data published in the cited official sources.
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Dunkirk Q90-125 vs Dunkirk Q90-150
Side-by-side comparison of the Dunkirk Q90-125 and Dunkirk Q90-150 from the Dunkirk Boilers Q90 (Series 4 and Q90-200 Series II) line: published ratings, efficiency, physical data and the differences that separate the two.
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System 2000 EK1 Frontier 80,000 BTU/hr vs 100,000 BTU/hr
How the System 2000 EK1 Frontier 80,000 BTU/hr and System 2000 EK1 Frontier 100,000 BTU/hr compare within the Energy Kinetics System 2000 Frontier line, using the ratings and installation data published in the cited official sources.
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System 2000 EK1 Frontier 100,000 BTU/hr vs 120,000 BTU/hr
Side-by-side comparison of the System 2000 EK1 Frontier 100,000 BTU/hr and System 2000 EK1 Frontier 120,000 BTU/hr from the Energy Kinetics System 2000 Frontier line: published ratings, efficiency, physical data and the differences that separate the two.
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Energy Kinetics Accel CS EK1C-120 vs EK2C-150
Side-by-side comparison of the Energy Kinetics Accel CS EK1C-120 and Energy Kinetics Accel CS EK2C-150 from the Energy Kinetics Accel CS line: published ratings, efficiency, physical data and the differences that separate the two.
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Energy Kinetics Accel CS EK2C-150 vs EK2C-200
Side-by-side comparison of the Energy Kinetics Accel CS EK2C-150 and Energy Kinetics Accel CS EK2C-200 from the Energy Kinetics Accel CS line: published ratings, efficiency, physical data and the differences that separate the two.
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Energy Kinetics Accel CS EK1C-90 vs EK2C-150
Side-by-side comparison of the Energy Kinetics Accel CS EK1C-90 and Energy Kinetics Accel CS EK2C-150 from the Energy Kinetics Accel CS line: published ratings, efficiency, physical data and the differences that separate the two.
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Fulton ENDURA EDR-750 vs EDR-1500
Side-by-side comparison of the Fulton ENDURA EDR-750 and Fulton ENDURA EDR-1500 from the Fulton ENDURA line: published ratings, efficiency, physical data and the differences that separate the two.
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HTP ELU-85WBN vs HTP ELU-120WCN
How the HTP ELU-85WBN and HTP ELU-120WCN compare within the HTP Elite Ultra (ELU) line, using the ratings and installation data published in the cited official sources.
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HTP ELU-120WCN vs HTP ELU-120WBN
How the HTP ELU-120WCN and HTP ELU-120WBN compare within the HTP Elite Ultra (ELU) line, using the ratings and installation data published in the cited official sources.
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HTP ELU-120WBN vs HTP ELU-150WCN
Side-by-side comparison of the HTP ELU-120WBN and HTP ELU-150WCN from the HTP Elite Ultra (ELU) line: published ratings, efficiency, physical data and the differences that separate the two.
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HTP ELU-150WCN vs HTP ELU-150WBN
How the HTP ELU-150WCN and HTP ELU-150WBN compare within the HTP Elite Ultra (ELU) line, using the ratings and installation data published in the cited official sources.
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HTP Elite XL ELX-500FBN vs ELX-650FBN
Side-by-side comparison of the HTP Elite XL ELX-500FBN and HTP Elite XL ELX-650FBN from the HTP Elite XL Commercial Condensing Boiler line: published ratings, efficiency, physical data and the differences that separate the two.
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HTP Elite XL ELX-650FBN vs ELX-800FBN
How the HTP Elite XL ELX-650FBN and HTP Elite XL ELX-800FBN compare within the HTP Elite XL Commercial Condensing Boiler line, using the ratings and installation data published in the cited official sources.
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HTP Mod Con 500 vs Con 850
Side-by-side comparison of the HTP Mod Con 500 and HTP Mod Con 850 from the HTP Mod Con Commercial Gas Boiler line: published ratings, efficiency, physical data and the differences that separate the two.
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HTP EFW-285WBN vs HTP EFW-399WBN
Side-by-side comparison of the HTP EFW-285WBN and HTP EFW-399WBN from the HTP EFW Series line: published ratings, efficiency, physical data and the differences that separate the two.
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HTP PHR100-55 vs HTP PHR160-55
Side-by-side comparison of the HTP PHR100-55 and HTP PHR160-55 from the HTP Pioneer (discontinued) line: published ratings, efficiency, physical data and the differences that separate the two.
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HTP EFTC-140F vs HTP EFTC-140W
How the HTP EFTC-140F and HTP EFTC-140W compare within the HTP EFT Combi (discontinued) line, using the ratings and installation data published in the cited official sources.
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HTP EFTC-140W vs HTP EFTC-199F
How the HTP EFTC-140W and HTP EFTC-199F compare within the HTP EFT Combi (discontinued) line, using the ratings and installation data published in the cited official sources.
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HTP PHR-130-55C vs HTP PHR-199-55C
How the HTP PHR-130-55C and HTP PHR-199-55C compare within the HTP Versa-Flame (discontinued) line, using the ratings and installation data published in the cited official sources.
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HTP UFTC-140F vs HTP UFTC-140W
How the HTP UFTC-140F and HTP UFTC-140W compare within the HTP UFT Combi (discontinued) line, using the ratings and installation data published in the cited official sources.
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HTP UFTC-140W vs HTP UFTC-199F
How the HTP UFTC-140W and HTP UFTC-199F compare within the HTP UFT Combi (discontinued) line, using the ratings and installation data published in the cited official sources.
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Hurst Series 200 — 200 HP vs 300 HP
How the Hurst Series 200 — 200 HP and Hurst Series 200 — 300 HP compare within the Hurst Boiler & Welding Co., Inc. Scotch Marine Series 200 line, using the ratings and installation data published in the cited official sources.
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Hurst Series 200 — 500 HP vs 800 HP
How the Hurst Series 200 — 500 HP and Hurst Series 200 — 800 HP compare within the Hurst Boiler & Welding Co., Inc. Scotch Marine Series 200 line, using the ratings and installation data published in the cited official sources.
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Ideal Exalt Wall 110 vs Wall 199
How the Ideal Exalt Wall 110 and Ideal Exalt Wall 199 compare within the Ideal Heating Exalt Wall (heat-only) line, using the ratings and installation data published in the cited official sources.
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Ideal Exalt Floor 110 vs Floor 199
How the Ideal Exalt Floor 110 and Ideal Exalt Floor 199 compare within the Ideal Heating Exalt Floor (heat-only) line, using the ratings and installation data published in the cited official sources.
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Ideal Gallant Wall 250 vs Wall 399
Side-by-side comparison of the Ideal Gallant Wall 250 and Ideal Gallant Wall 399 from the Ideal Heating Gallant Wall line: published ratings, efficiency, physical data and the differences that separate the two.
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Ideal Commodore Wall CB399W vs CB470W
Side-by-side comparison of the Ideal Commodore Wall CB399W and Ideal Commodore Wall CB470W from the Ideal Heating Commodore Wall line: published ratings, efficiency, physical data and the differences that separate the two.
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Ideal Commodore Wall CB299W vs CB470W
How the Ideal Commodore Wall CB299W and Ideal Commodore Wall CB470W compare within the Ideal Heating Commodore Wall line, using the ratings and installation data published in the cited official sources.
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Ideal Commodore Floor CB2000F vs CB3000F
How the Ideal Commodore Floor CB2000F and Ideal Commodore Floor CB3000F compare within the Ideal Heating Commodore Floor line, using the ratings and installation data published in the cited official sources.
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Ideal Commodore Floor CB1250F vs CB3000F
How the Ideal Commodore Floor CB1250F and Ideal Commodore Floor CB3000F compare within the Ideal Heating Commodore Floor line, using the ratings and installation data published in the cited official sources.
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Laars Mascot II LMC vs LMH
How the Laars Mascot II LMC and Laars Mascot II LMH compare within the Laars Heating Systems Mascot II (discontinued) line, using the ratings and installation data published in the cited official sources.
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Laars Mascot LX MLX 50 vs MLX 75
How the Laars Mascot LX MLX 50 and Laars Mascot LX MLX 75 compare within the Laars Heating Systems Mascot LX (discontinued) line, using the ratings and installation data published in the cited official sources.
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Laars Mascot LX MLX 75 vs MLX 100
How the Laars Mascot LX MLX 75 and Laars Mascot LX MLX 100 compare within the Laars Heating Systems Mascot LX (discontinued) line, using the ratings and installation data published in the cited official sources.
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Laars Mascot LX MLX 100 vs MLX 125
How the Laars Mascot LX MLX 100 and Laars Mascot LX MLX 125 compare within the Laars Heating Systems Mascot LX (discontinued) line, using the ratings and installation data published in the cited official sources.
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Laars Mascot LX MLX 125 vs MLX 150
Side-by-side comparison of the Laars Mascot LX MLX 125 and Laars Mascot LX MLX 150 from the Laars Heating Systems Mascot LX (discontinued) line: published ratings, efficiency, physical data and the differences that separate the two.
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Laars Endurance EBP0110 vs EBP0175
How the Laars Endurance EBP0110 and Laars Endurance EBP0175 compare within the Laars Heating Systems Endurance (discontinued) line, using the ratings and installation data published in the cited official sources.
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Laars Mini-Therm II JVS-50 vs JVS-75
How the Laars Mini-Therm II JVS-50 and Laars Mini-Therm II JVS-75 compare within the Laars Heating Systems Mini-Therm JVS (discontinued) line, using the ratings and installation data published in the cited official sources.
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Laars Mini-Therm II JVS-75 vs JVS-100
How the Laars Mini-Therm II JVS-75 and Laars Mini-Therm II JVS-100 compare within the Laars Heating Systems Mini-Therm JVS (discontinued) line, using the ratings and installation data published in the cited official sources.
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Laars Mini-Therm II JVS-100 vs JVS-125
How the Laars Mini-Therm II JVS-100 and Laars Mini-Therm II JVS-125 compare within the Laars Heating Systems Mini-Therm JVS (discontinued) line, using the ratings and installation data published in the cited official sources.
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Laars Mini-Therm II JVS-125 vs JVS-160
How the Laars Mini-Therm II JVS-125 and Laars Mini-Therm II JVS-160 compare within the Laars Heating Systems Mini-Therm JVS (discontinued) line, using the ratings and installation data published in the cited official sources.
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Laars Mini-Therm II JVT-50 vs JVT-75
How the Laars Mini-Therm II JVT-50 and Laars Mini-Therm II JVT-75 compare within the Laars Heating Systems Mini-Therm JVT (discontinued) line, using the ratings and installation data published in the cited official sources.
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Laars Mini-Therm II JVT-75 vs JVT-100
How the Laars Mini-Therm II JVT-75 and Laars Mini-Therm II JVT-100 compare within the Laars Heating Systems Mini-Therm JVT (discontinued) line, using the ratings and installation data published in the cited official sources.
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Laars Mini-Therm II JVT-100 vs JVT-125
How the Laars Mini-Therm II JVT-100 and Laars Mini-Therm II JVT-125 compare within the Laars Heating Systems Mini-Therm JVT (discontinued) line, using the ratings and installation data published in the cited official sources.
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Laars Mini-Therm II JVT-125 vs JVT-160
How the Laars Mini-Therm II JVT-125 and Laars Mini-Therm II JVT-160 compare within the Laars Heating Systems Mini-Therm JVT (discontinued) line, using the ratings and installation data published in the cited official sources.
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Laars Mighty Therm 500 vs Therm 600
How the Laars Mighty Therm 500 and Laars Mighty Therm 600 compare within the Laars Heating Systems Mighty Therm (discontinued) line, using the ratings and installation data published in the cited official sources.
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Laars Mighty Therm 600 vs Therm 715
How the Laars Mighty Therm 600 and Laars Mighty Therm 715 compare within the Laars Heating Systems Mighty Therm (discontinued) line, using the ratings and installation data published in the cited official sources.
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Laars Mighty Therm 715 vs Therm 850
Side-by-side comparison of the Laars Mighty Therm 715 and Laars Mighty Therm 850 from the Laars Heating Systems Mighty Therm (discontinued) line: published ratings, efficiency, physical data and the differences that separate the two.
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Laars Mighty Therm 850 vs Therm 1010
How the Laars Mighty Therm 850 and Laars Mighty Therm 1010 compare within the Laars Heating Systems Mighty Therm (discontinued) line, using the ratings and installation data published in the cited official sources.
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Laars Rheos 1200 vs Laars Rheos+ RHHH 1200
How the Laars Rheos 1200 and Laars Rheos+ RHHH 1200 compare within the Laars Heating Systems Rheos (discontinued) line, using the ratings and installation data published in the cited official sources.
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Laars Rheos+ RHHH 1200 vs Laars Rheos 1600
How the Laars Rheos+ RHHH 1200 and Laars Rheos 1600 compare within the Laars Heating Systems Rheos (discontinued) line, using the ratings and installation data published in the cited official sources.
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Laars Rheos 1600 vs Laars Rheos+ RHHH 1600
How the Laars Rheos 1600 and Laars Rheos+ RHHH 1600 compare within the Laars Heating Systems Rheos (discontinued) line, using the ratings and installation data published in the cited official sources.
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Laars NeoTherm XTR NT2H 500 vs NT2H 650
Side-by-side comparison of the Laars NeoTherm XTR NT2H 500 and Laars NeoTherm XTR NT2H 650 from the Laars Heating Systems NeoTherm XTR line: published ratings, efficiency, physical data and the differences that separate the two.
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Laars NeoTherm XTR NT2H 650 vs NT2H 800
How the Laars NeoTherm XTR NT2H 650 and Laars NeoTherm XTR NT2H 800 compare within the Laars Heating Systems NeoTherm XTR line, using the ratings and installation data published in the cited official sources.
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Laars NeoTherm NTH 500 vs NTH 600
How the Laars NeoTherm NTH 500 and Laars NeoTherm NTH 600 compare within the Laars Heating Systems NeoTherm Commercial line, using the ratings and installation data published in the cited official sources.
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Laars NeoTherm NTH 600 vs NTH 750
Side-by-side comparison of the Laars NeoTherm NTH 600 and Laars NeoTherm NTH 750 from the Laars Heating Systems NeoTherm Commercial line: published ratings, efficiency, physical data and the differences that separate the two.
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Laars NeoTherm NTH 750 vs NTH 850
How the Laars NeoTherm NTH 750 and Laars NeoTherm NTH 850 compare within the Laars Heating Systems NeoTherm Commercial line, using the ratings and installation data published in the cited official sources.
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Laars MagnaTherm MGH 2000 vs MGH 2500
How the Laars MagnaTherm MGH 2000 and Laars MagnaTherm MGH 2500 compare within the Laars Heating Systems MagnaTherm line, using the ratings and installation data published in the cited official sources.
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Laars MagnaTherm MGH 2500 vs MGH 3000
Side-by-side comparison of the Laars MagnaTherm MGH 2500 and Laars MagnaTherm MGH 3000 from the Laars Heating Systems MagnaTherm line: published ratings, efficiency, physical data and the differences that separate the two.
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Laars MagnaTherm MGH 3000 vs MGH 3500
How the Laars MagnaTherm MGH 3000 and Laars MagnaTherm MGH 3500 compare within the Laars Heating Systems MagnaTherm line, using the ratings and installation data published in the cited official sources.
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Laars MagnaTherm HTD 1600 vs HTD 2000
How the Laars MagnaTherm HTD 1600 and Laars MagnaTherm HTD 2000 compare within the Laars Heating Systems MagnaTherm HTD line, using the ratings and installation data published in the cited official sources.
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Laars MagnaTherm HTD 2500 vs HTD 3000
Side-by-side comparison of the Laars MagnaTherm HTD 2500 and Laars MagnaTherm HTD 3000 from the Laars Heating Systems MagnaTherm HTD line: published ratings, efficiency, physical data and the differences that separate the two.
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Laars MagnaTherm HTD 3000 vs HTD 3500
How the Laars MagnaTherm HTD 3000 and Laars MagnaTherm HTD 3500 compare within the Laars Heating Systems MagnaTherm HTD line, using the ratings and installation data published in the cited official sources.
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Laars MagnaTherm FT CFH1000 vs CFH1500
How the Laars MagnaTherm FT CFH1000 and Laars MagnaTherm FT CFH1500 compare within the Laars Heating Systems MagnaTherm FT line, using the ratings and installation data published in the cited official sources.
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Laars MagnaTherm FT CFH2000 vs CFH3000
How the Laars MagnaTherm FT CFH2000 and Laars MagnaTherm FT CFH3000 compare within the Laars Heating Systems MagnaTherm FT line, using the ratings and installation data published in the cited official sources.
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Laars MagnaTherm FT CFH1000 vs CFH2000
How the Laars MagnaTherm FT CFH1000 and Laars MagnaTherm FT CFH2000 compare within the Laars Heating Systems MagnaTherm FT line, using the ratings and installation data published in the cited official sources.
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Laars Pennant PNCH 500 vs PNCH 750
How the Laars Pennant PNCH 500 and Laars Pennant PNCH 750 compare within the Laars Heating Systems Pennant line, using the ratings and installation data published in the cited official sources.
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Laars Pennant PNCH 750 vs PNCH 1000
How the Laars Pennant PNCH 750 and Laars Pennant PNCH 1000 compare within the Laars Heating Systems Pennant line, using the ratings and installation data published in the cited official sources.
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Laars Pennant PNCH 1250 vs PNCH 1500
Side-by-side comparison of the Laars Pennant PNCH 1250 and Laars Pennant PNCH 1500 from the Laars Heating Systems Pennant line: published ratings, efficiency, physical data and the differences that separate the two.
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Laars Mighty Therm2 MT2V0200 vs MT2V0300
How the Laars Mighty Therm2 MT2V0200 and Laars Mighty Therm2 MT2V0300 compare within the Laars Heating Systems Mighty Therm2 line, using the ratings and installation data published in the cited official sources.
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Laars Mighty Therm2 MT2V0300 vs MT2H0400
How the Laars Mighty Therm2 MT2V0300 and Laars Mighty Therm2 MT2H0400 compare within the Laars Heating Systems Mighty Therm2 line, using the ratings and installation data published in the cited official sources.
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Laars Mighty Therm2 MT2H0400 vs MT2V0400
Side-by-side comparison of the Laars Mighty Therm2 MT2H0400 and Laars Mighty Therm2 MT2V0400 from the Laars Heating Systems Mighty Therm2 line: published ratings, efficiency, physical data and the differences that separate the two.
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Lochinvar Knight KHB055 vs KHB085
How the Lochinvar Knight KHB055 and Lochinvar Knight KHB085 compare within the Lochinvar Knight Floor Mount (KHB) line, using the ratings and installation data published in the cited official sources.
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Lochinvar Knight KHB085 vs KHB110
How the Lochinvar Knight KHB085 and Lochinvar Knight KHB110 compare within the Lochinvar Knight Floor Mount (KHB) line, using the ratings and installation data published in the cited official sources.
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Lochinvar Knight KHB110 vs KHB155
How the Lochinvar Knight KHB110 and Lochinvar Knight KHB155 compare within the Lochinvar Knight Floor Mount (KHB) line, using the ratings and installation data published in the cited official sources.
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Lochinvar Knight KHB155 vs KHB199
Side-by-side comparison of the Lochinvar Knight KHB155 and Lochinvar Knight KHB199 from the Lochinvar Knight Floor Mount (KHB) line: published ratings, efficiency, physical data and the differences that separate the two.
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Lochinvar Power-fin PBN0752-M9 vs PBN1002-M9
How the Lochinvar Power-fin PBN0752-M9 and Lochinvar Power-fin PBN1002-M9 compare within the Lochinvar Power-Fin (PBN/PBL) line, using the ratings and installation data published in the cited official sources.
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Lochinvar SYNC SBN1300 vs SBN1500
Side-by-side comparison of the Lochinvar SYNC SBN1300 and Lochinvar SYNC SBN1500 from the Lochinvar SYNC (SBN, discontinued) line: published ratings, efficiency, physical data and the differences that separate the two.
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Lochinvar SYNC SBN1000 vs SBN1500
How the Lochinvar SYNC SBN1000 and Lochinvar SYNC SBN1500 compare within the Lochinvar SYNC (SBN, discontinued) line, using the ratings and installation data published in the cited official sources.
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Lochinvar Epic EPB080N vs EPC110N-CAN
Side-by-side comparison of the Lochinvar Epic EPB080N and Lochinvar Epic EPC110N-CAN from the Lochinvar Epic (EPB/EPC/EFC) line: published ratings, efficiency, physical data and the differences that separate the two.
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Lochinvar Squire SDT065 vs SDT080
How the Lochinvar Squire SDT065 and Lochinvar Squire SDT080 compare within the Lochinvar Squire Indirect Tank (SIT/SDT/SET) line, using the ratings and installation data published in the cited official sources.
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Lochinvar Squire SDT080 vs SDT119
How the Lochinvar Squire SDT080 and Lochinvar Squire SDT119 compare within the Lochinvar Squire Indirect Tank (SIT/SDT/SET) line, using the ratings and installation data published in the cited official sources.
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Lochinvar Armor AWH0500NPM vs AWH0650NPM
Side-by-side comparison of the Lochinvar Armor AWH0500NPM and Lochinvar Armor AWH0650NPM from the Lochinvar Armor AWH (floor commercial) line: published ratings, efficiency, physical data and the differences that separate the two.
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Lochinvar Armor AWH0650NPM vs AWH0800NPM
How the Lochinvar Armor AWH0650NPM and Lochinvar Armor AWH0800NPM compare within the Lochinvar Armor AWH (floor commercial) line, using the ratings and installation data published in the cited official sources.
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Lochinvar Armor AWN151PM vs AWN200PM
How the Lochinvar Armor AWN151PM and Lochinvar Armor AWN200PM compare within the Lochinvar Armor AWN (light commercial floor) line, using the ratings and installation data published in the cited official sources.
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Lochinvar Armor AWN200PM vs AWN286PM
Side-by-side comparison of the Lochinvar Armor AWN200PM and Lochinvar Armor AWN286PM from the Lochinvar Armor AWN (light commercial floor) line: published ratings, efficiency, physical data and the differences that separate the two.
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Lochinvar Armor AWN286PM vs AWN400PM
Side-by-side comparison of the Lochinvar Armor AWN286PM and Lochinvar Armor AWN400PM from the Lochinvar Armor AWN (light commercial floor) line: published ratings, efficiency, physical data and the differences that separate the two.
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Lochinvar Armor OAN151PM vs OAN200PM
How the Lochinvar Armor OAN151PM and Lochinvar Armor OAN200PM compare within the Lochinvar Armor OAN (outdoor) line, using the ratings and installation data published in the cited official sources.
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Lochinvar Armor OAN200PM vs OAN286PM
Side-by-side comparison of the Lochinvar Armor OAN200PM and Lochinvar Armor OAN286PM from the Lochinvar Armor OAN (outdoor) line: published ratings, efficiency, physical data and the differences that separate the two.
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Lochinvar Armor OAN286PM vs OAN400PM
Side-by-side comparison of the Lochinvar Armor OAN286PM and Lochinvar Armor OAN400PM from the Lochinvar Armor OAN (outdoor) line: published ratings, efficiency, physical data and the differences that separate the two.
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Lochinvar Armor OAN400PM vs OAN501PM
Side-by-side comparison of the Lochinvar Armor OAN400PM and Lochinvar Armor OAN501PM from the Lochinvar Armor OAN (outdoor) line: published ratings, efficiency, physical data and the differences that separate the two.
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Lochinvar Armor WAN125PM vs WAN200PM
Side-by-side comparison of the Lochinvar Armor WAN125PM and Lochinvar Armor WAN200PM from the Lochinvar Armor WAN (wall mount) line: published ratings, efficiency, physical data and the differences that separate the two.
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Lochinvar Armor WAN200PM vs WAN201PM
How the Lochinvar Armor WAN200PM and Lochinvar Armor WAN201PM compare within the Lochinvar Armor WAN (wall mount) line, using the ratings and installation data published in the cited official sources.
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Lochinvar Knight KHN055 vs WHN055
Side-by-side comparison of the Lochinvar Knight KHN055 and Lochinvar Knight WHN055 from the Lochinvar Knight (previous generation WH/KH) line: published ratings, efficiency, physical data and the differences that separate the two.
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Lochinvar Knight WHN055 vs KHN085
How the Lochinvar Knight WHN055 and Lochinvar Knight KHN085 compare within the Lochinvar Knight (previous generation WH/KH) line, using the ratings and installation data published in the cited official sources.
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Miura LX 250/300 vs LX 50
Side-by-side comparison of the Miura LX 250/300 and Miura LX 50 from the Miura LX Series Steam Boiler line: published ratings, efficiency, physical data and the differences that separate the two.
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Navien NHB-55H vs Navien NHB-110H
Side-by-side comparison of the Navien NHB-55H and Navien NHB-110H from the Navien NHB-H Compact Boiler line: published ratings, efficiency, physical data and the differences that separate the two.
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Navien NFB700-500C vs Navien NFB700-800C
How the Navien NFB700-500C and Navien NFB700-800C compare within the Navien NFB700-C Commercial Boiler line, using the ratings and installation data published in the cited official sources.
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Navien NCB-180 vs Navien NCB-240
How the Navien NCB-180 and Navien NCB-240 compare within the Navien NCB (first generation) line, using the ratings and installation data published in the cited official sources.
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Navien NCB-180E vs Navien NCB-210E
Side-by-side comparison of the Navien NCB-180E and Navien NCB-210E from the Navien NCB-E Combi (previous generation) line: published ratings, efficiency, physical data and the differences that separate the two.
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Navien NCB-150E vs Navien NCB-210E
How the Navien NCB-150E and Navien NCB-210E compare within the Navien NCB-E Combi (previous generation) line, using the ratings and installation data published in the cited official sources.
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Navien NPE-180A2 vs Navien NPE-240A2
How the Navien NPE-180A2 and Navien NPE-240A2 compare within the Navien NPE-A2 Tankless Water Heaters (DHW) line, using the ratings and installation data published in the cited official sources.
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Navien NPE-180S2 vs Navien NPE-210S2
Side-by-side comparison of the Navien NPE-180S2 and Navien NPE-210S2 from the Navien NPE-S2 Tankless Water Heaters (DHW) line: published ratings, efficiency, physical data and the differences that separate the two.
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Navien NPE-150S2 vs Navien NPE-210S2
How the Navien NPE-150S2 and Navien NPE-210S2 compare within the Navien NPE-S2 Tankless Water Heaters (DHW) line, using the ratings and installation data published in the cited official sources.
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Navien NPN-160U vs Navien NPN-180U
Side-by-side comparison of the Navien NPN-160U and Navien NPN-180U from the Navien NPN-U Non-Condensing Tankless Water Heaters (DHW) line: published ratings, efficiency, physical data and the differences that separate the two.
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Navien NPN-180U vs Navien NPN-199U
Side-by-side comparison of the Navien NPN-180U and Navien NPN-199U from the Navien NPN-U Non-Condensing Tankless Water Heaters (DHW) line: published ratings, efficiency, physical data and the differences that separate the two.
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Navien NPN-160E vs Navien NPN-180E
Side-by-side comparison of the Navien NPN-160E and Navien NPN-180E from the Navien NPN-E Non-Condensing Tankless Water Heaters (DHW) line: published ratings, efficiency, physical data and the differences that separate the two.
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Navien NPN-180E vs Navien NPN-199E
Side-by-side comparison of the Navien NPN-180E and Navien NPN-199E from the Navien NPN-E Non-Condensing Tankless Water Heaters (DHW) line: published ratings, efficiency, physical data and the differences that separate the two.
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New Yorker GHE-II GHE2-080 vs GHE2-120B
How the New Yorker GHE-II GHE2-080 and New Yorker GHE-II GHE2-120B compare within the New Yorker Boiler GHE-II line, using the ratings and installation data published in the cited official sources.
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New Yorker GHE-II GHE2-120B vs GHE2-150
How the New Yorker GHE-II GHE2-120B and New Yorker GHE-II GHE2-150 compare within the New Yorker Boiler GHE-II line, using the ratings and installation data published in the cited official sources.
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New Yorker GHE-II GHE2-150 vs GHE2-180
How the New Yorker GHE-II GHE2-150 and New Yorker GHE-II GHE2-180 compare within the New Yorker Boiler GHE-II line, using the ratings and installation data published in the cited official sources.
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New Yorker CG-F CG30F vs CG40F
How the New Yorker CG-F CG30F and New Yorker CG-F CG40F compare within the New Yorker Boiler CG-F line, using the ratings and installation data published in the cited official sources.
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New Yorker CG-F CG40F vs CG50F
How the New Yorker CG-F CG40F and New Yorker CG-F CG50F compare within the New Yorker Boiler CG-F line, using the ratings and installation data published in the cited official sources.
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New Yorker CG-F CG50F vs CG60F
How the New Yorker CG-F CG50F and New Yorker CG-F CG60F compare within the New Yorker Boiler CG-F line, using the ratings and installation data published in the cited official sources.
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New Yorker CGS-C CGS30C vs CGS40C
How the New Yorker CGS-C CGS30C and New Yorker CGS-C CGS40C compare within the New Yorker Boiler CGS-C line, using the ratings and installation data published in the cited official sources.
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New Yorker CGS-C CGS40C vs CGS50C
How the New Yorker CGS-C CGS40C and New Yorker CGS-C CGS50C compare within the New Yorker Boiler CGS-C line, using the ratings and installation data published in the cited official sources.
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New Yorker CGS-C CGS50C vs CGS60C
How the New Yorker CGS-C CGS50C and New Yorker CGS-C CGS60C compare within the New Yorker Boiler CGS-C line, using the ratings and installation data published in the cited official sources.
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New Yorker CGS-C CGS60C vs CGS70C
How the New Yorker CGS-C CGS60C and New Yorker CGS-C CGS70C compare within the New Yorker Boiler CGS-C line, using the ratings and installation data published in the cited official sources.
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New Yorker PVCG-C PVCG30CP vs PVCG30CN
Side-by-side comparison of the New Yorker PVCG-C PVCG30CP and New Yorker PVCG-C PVCG30CN from the New Yorker Boiler PVCG-C line: published ratings, efficiency, physical data and the differences that separate the two.
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New Yorker PVCG-C PVCG30CN vs PVCG40CP
How the New Yorker PVCG-C PVCG30CN and New Yorker PVCG-C PVCG40CP compare within the New Yorker Boiler PVCG-C line, using the ratings and installation data published in the cited official sources.
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New Yorker PVCG-C PVCG40CP vs PVCG40CN
Side-by-side comparison of the New Yorker PVCG-C PVCG40CP and New Yorker PVCG-C PVCG40CN from the New Yorker Boiler PVCG-C line: published ratings, efficiency, physical data and the differences that separate the two.
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Noritz EZ71DV vs Noritz EZ111DV
How the Noritz EZ71DV and Noritz EZ111DV compare within the Noritz EZ Series Tankless Water Heaters line, using the ratings and installation data published in the cited official sources.
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Noritz NRC711-DV vs Noritz NRC98DV
How the Noritz NRC711-DV and Noritz NRC98DV compare within the Noritz NRC Series Tankless Water Heaters line, using the ratings and installation data published in the cited official sources.
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Noritz NRC661A-DV vs Noritz NRC98DV
Side-by-side comparison of the Noritz NRC661A-DV and Noritz NRC98DV from the Noritz NRC Series Tankless Water Heaters line: published ratings, efficiency, physical data and the differences that separate the two.
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NTI Trinity TFT60 vs TFT85
How the NTI Trinity TFT60 and NTI Trinity TFT85 compare within the NTI Boilers Trinity TFT (discontinued) line, using the ratings and installation data published in the cited official sources.
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NTI Trinity TFT85 vs TFT110
How the NTI Trinity TFT85 and NTI Trinity TFT110 compare within the NTI Boilers Trinity TFT (discontinued) line, using the ratings and installation data published in the cited official sources.
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NTI Trinity TFT110 vs TFT154
Side-by-side comparison of the NTI Trinity TFT110 and NTI Trinity TFT154 from the NTI Boilers Trinity TFT (discontinued) line: published ratings, efficiency, physical data and the differences that separate the two.
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NTI Trinity TFT154 vs TFT201
How the NTI Trinity TFT154 and NTI Trinity TFT201 compare within the NTI Boilers Trinity TFT (discontinued) line, using the ratings and installation data published in the cited official sources.
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P-K MODU-FIRE FD N1000 vs N1500
How the P-K MODU-FIRE FD N1000 and P-K MODU-FIRE FD N1500 compare within the Patterson-Kelley P-K MODU-FIRE FD line, using the ratings and installation data published in the cited official sources.
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P-K THERMIFIC VELOX N1000 vs N1500
How the P-K THERMIFIC VELOX N1000 and P-K THERMIFIC VELOX N1500 compare within the Patterson-Kelley P-K THERMIFIC VELOX line, using the ratings and installation data published in the cited official sources.
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Pennco 15B-060K vs Pennco 15B-095K
Side-by-side comparison of the Pennco 15B-060K and Pennco 15B-095K from the Pennco 15B-K line: published ratings, efficiency, physical data and the differences that separate the two.
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Pennco 15B-095K vs Pennco 15B-120K
How the Pennco 15B-095K and Pennco 15B-120K compare within the Pennco 15B-K line, using the ratings and installation data published in the cited official sources.
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Pennco 15B-120K vs Pennco 15B-150K
How the Pennco 15B-120K and Pennco 15B-150K compare within the Pennco 15B-K line, using the ratings and installation data published in the cited official sources.
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Pennco FSB-2 vs Pennco FSB-3
How the Pennco FSB-2 and Pennco FSB-3 compare within the Pennco FSB Series line, using the ratings and installation data published in the cited official sources.
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Pennco FSB-3 vs Pennco FSB-4
How the Pennco FSB-3 and Pennco FSB-4 compare within the Pennco FSB Series line, using the ratings and installation data published in the cited official sources.
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Pennco FSB-4 vs Pennco FSB-5
How the Pennco FSB-4 and Pennco FSB-5 compare within the Pennco FSB Series line, using the ratings and installation data published in the cited official sources.
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Pennco 1603HSID vs Pennco 1604HSID
How the Pennco 1603HSID and Pennco 1604HSID compare within the Pennco 16 Series line, using the ratings and installation data published in the cited official sources.
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Pennco 1604HSID vs Pennco 1605HSID
How the Pennco 1604HSID and Pennco 1605HSID compare within the Pennco 16 Series line, using the ratings and installation data published in the cited official sources.
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Pennco 1605HSID vs Pennco 1606HSID
How the Pennco 1605HSID and Pennco 1606HSID compare within the Pennco 16 Series line, using the ratings and installation data published in the cited official sources.
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Raypak Hi Delta SS HD201 vs HD251
How the Raypak Hi Delta SS HD201 and Raypak Hi Delta SS HD251 compare within the Raypak Hi Delta SS line, using the ratings and installation data published in the cited official sources.
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Raypak Hi Delta SS HD251 vs HD301
Side-by-side comparison of the Raypak Hi Delta SS HD251 and Raypak Hi Delta SS HD301 from the Raypak Hi Delta SS line: published ratings, efficiency, physical data and the differences that separate the two.
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RBI Futera III 750 vs III 1000
How the RBI Futera III 750 and RBI Futera III 1000 compare within the RBI Futera III line, using the ratings and installation data published in the cited official sources.
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RBI Infinite Energy² 500 vs Energy² 750
How the RBI Infinite Energy² 500 and RBI Infinite Energy² 750 compare within the RBI Infinite Energy² line, using the ratings and installation data published in the cited official sources.
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Rheem RTGH-CSR11i vs Ruud RUTGH-CS11i
How the Rheem RTGH-CSR11i and Ruud RUTGH-CS11i compare within the Rheem / Ruud (commercial) IKONIC Commercial Condensing Tankless line, using the ratings and installation data published in the cited official sources.
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Ruud RUTGH-CS11i vs Ruud RUTGH-CSR11i
Side-by-side comparison of the Ruud RUTGH-CS11i and Ruud RUTGH-CSR11i from the Rheem / Ruud (commercial) IKONIC Commercial Condensing Tankless line: published ratings, efficiency, physical data and the differences that separate the two.
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Rinnai IP150S vs Rinnai IP175S
How the Rinnai IP150S and Rinnai IP175S compare within the Rinnai i-Series+ Solo line, using the ratings and installation data published in the cited official sources.
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Rinnai i060CN vs Rinnai i060SN
Side-by-side comparison of the Rinnai i060CN and Rinnai i060SN from the Rinnai i-Series (previous generation) line: published ratings, efficiency, physical data and the differences that separate the two.
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Rinnai i060SN vs Rinnai i090CN
How the Rinnai i060SN and Rinnai i090CN compare within the Rinnai i-Series (previous generation) line, using the ratings and installation data published in the cited official sources.
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Rinnai i090CN vs Rinnai i090SN
Side-by-side comparison of the Rinnai i090CN and Rinnai i090SN from the Rinnai i-Series (previous generation) line: published ratings, efficiency, physical data and the differences that separate the two.
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Rinnai i090SN vs Rinnai i120CN
Side-by-side comparison of the Rinnai i090SN and Rinnai i120CN from the Rinnai i-Series (previous generation) line: published ratings, efficiency, physical data and the differences that separate the two.
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Rinnai M060CN vs Rinnai M060SN
Side-by-side comparison of the Rinnai M060CN and Rinnai M060SN from the Rinnai M-Series (discontinued) line: published ratings, efficiency, physical data and the differences that separate the two.
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Rinnai M060SN vs Rinnai M090CN
How the Rinnai M060SN and Rinnai M090CN compare within the Rinnai M-Series (discontinued) line, using the ratings and installation data published in the cited official sources.
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Rinnai M090CN vs Rinnai M090SN
Side-by-side comparison of the Rinnai M090CN and Rinnai M090SN from the Rinnai M-Series (discontinued) line: published ratings, efficiency, physical data and the differences that separate the two.
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Rinnai M090SN vs Rinnai M120CN
Side-by-side comparison of the Rinnai M090SN and Rinnai M120CN from the Rinnai M-Series (discontinued) line: published ratings, efficiency, physical data and the differences that separate the two.
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Rinnai Q175CN vs Rinnai Q130SN
How the Rinnai Q175CN and Rinnai Q130SN compare within the Rinnai Q-Series line, using the ratings and installation data published in the cited official sources.
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Rinnai RX160iN vs Rinnai RX180iN
Side-by-side comparison of the Rinnai RX160iN and Rinnai RX180iN from the Rinnai SENSEI RX Series line: published ratings, efficiency, physical data and the differences that separate the two.
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Rinnai RX130iN vs Rinnai RX180iN
How the Rinnai RX130iN and Rinnai RX180iN compare within the Rinnai SENSEI RX Series line, using the ratings and installation data published in the cited official sources.
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Smith 19HE-3 vs Smith 19HE-4
How the Smith 19HE-3 and Smith 19HE-4 compare within the Smith Cast Iron Boilers 19HE Series line, using the ratings and installation data published in the cited official sources.
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Smith RTS/28HE-4 vs Smith RTS/28HE-5
How the Smith RTS/28HE-4 and Smith RTS/28HE-5 compare within the Smith Cast Iron Boilers 28HE Series line, using the ratings and installation data published in the cited official sources.
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Smith GBX-70 vs Smith GBX-105
How the Smith GBX-70 and Smith GBX-105 compare within the Smith Cast Iron Boilers GBX Series (discontinued) line, using the ratings and installation data published in the cited official sources.
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Smith GBX-140 vs Smith GBX-175
Side-by-side comparison of the Smith GBX-140 and Smith GBX-175 from the Smith Cast Iron Boilers GBX Series (discontinued) line: published ratings, efficiency, physical data and the differences that separate the two.
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Smith GBX-175 vs Smith GBX-195
Side-by-side comparison of the Smith GBX-175 and Smith GBX-195 from the Smith Cast Iron Boilers GBX Series (discontinued) line: published ratings, efficiency, physical data and the differences that separate the two.
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Smith GVX-70 vs Smith GVX-105
How the Smith GVX-70 and Smith GVX-105 compare within the Smith Cast Iron Boilers GVX Series (discontinued) line, using the ratings and installation data published in the cited official sources.
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Smith GVX-140 vs Smith GVX-165
How the Smith GVX-140 and Smith GVX-165 compare within the Smith Cast Iron Boilers GVX Series (discontinued) line, using the ratings and installation data published in the cited official sources.
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Smith GVX-70 vs Smith GVX-140
Side-by-side comparison of the Smith GVX-70 and Smith GVX-140 from the Smith Cast Iron Boilers GVX Series (discontinued) line: published ratings, efficiency, physical data and the differences that separate the two.
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Takagi T-H3M-DV-N vs Takagi T-H3M-DV-P
Side-by-side comparison of the Takagi T-H3M-DV-N and Takagi T-H3M-DV-P from the Takagi T-H3 Series line: published ratings, efficiency, physical data and the differences that separate the two.
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Takagi T-H3M-DV-P vs Takagi T-H3M-OS-N
Side-by-side comparison of the Takagi T-H3M-DV-P and Takagi T-H3M-OS-N from the Takagi T-H3 Series line: published ratings, efficiency, physical data and the differences that separate the two.
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Takagi TCT-199I-N vs Takagi TCT-199I-P
Side-by-side comparison of the Takagi TCT-199I-N and Takagi TCT-199I-P from the Takagi TCT-199 Commercial Series line: published ratings, efficiency, physical data and the differences that separate the two.
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Takagi TCT-199I-P vs Takagi TCT-199O-N
Side-by-side comparison of the Takagi TCT-199I-P and Takagi TCT-199O-N from the Takagi TCT-199 Commercial Series line: published ratings, efficiency, physical data and the differences that separate the two.
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Takagi TCT-199O-N vs Takagi TCT-199O-P
Side-by-side comparison of the Takagi TCT-199O-N and Takagi TCT-199O-P from the Takagi TCT-199 Commercial Series line: published ratings, efficiency, physical data and the differences that separate the two.
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Takagi T-D2-IN-N vs Takagi T-D2-IN-P
Side-by-side comparison of the Takagi T-D2-IN-N and Takagi T-D2-IN-P from the Takagi T-D2 Series line: published ratings, efficiency, physical data and the differences that separate the two.
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Takagi T-D2-IN-P vs Takagi T-D2-OS-N
How the Takagi T-D2-IN-P and Takagi T-D2-OS-N compare within the Takagi T-D2 Series line, using the ratings and installation data published in the cited official sources.
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Takagi T-D2-OS-N vs Takagi T-D2-OS-P
Side-by-side comparison of the Takagi T-D2-OS-N and Takagi T-D2-OS-P from the Takagi T-D2 Series line: published ratings, efficiency, physical data and the differences that separate the two.
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Takagi T-M50-N vs Takagi T-M50-P
Side-by-side comparison of the Takagi T-M50-N and Takagi T-M50-P from the Takagi T-M50 Commercial Series line: published ratings, efficiency, physical data and the differences that separate the two.
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Takagi TK-540P-NIH vs Takagi TK-540P-PEH
Side-by-side comparison of the Takagi TK-540P-NIH and Takagi TK-540P-PEH from the Takagi TK-540P Series line: published ratings, efficiency, physical data and the differences that separate the two.
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Takagi TK-540P-PEH vs Takagi TK-540P-PIH
Side-by-side comparison of the Takagi TK-540P-PEH and Takagi TK-540P-PIH from the Takagi TK-540P Series line: published ratings, efficiency, physical data and the differences that separate the two.
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Takagi TK-540P-NEH vs Takagi TK-540P-PEH
Side-by-side comparison of the Takagi TK-540P-NEH and Takagi TK-540P-PEH from the Takagi TK-540P Series line: published ratings, efficiency, physical data and the differences that separate the two.
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Triangle Tube Instinct 110S (floor) vs (wall)
Side-by-side comparison of the Triangle Tube Instinct 110S (floor) and Triangle Tube Instinct 110S (wall) from the Triangle Tube Instinct line: published ratings, efficiency, physical data and the differences that separate the two.
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Triangle Tube Instinct 110S (wall) vs 155C (floor combi)
How the Triangle Tube Instinct 110S (wall) and Triangle Tube Instinct 155C (floor combi) compare within the Triangle Tube Instinct line, using the ratings and installation data published in the cited official sources.
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Triangle Tube Challenger CC85 Solo vs CC105 Combi
Side-by-side comparison of the Triangle Tube Challenger CC85 Solo and Triangle Tube Challenger CC105 Combi from the Triangle Tube Challenger line: published ratings, efficiency, physical data and the differences that separate the two.
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Triangle Tube Challenger CC105 Combi vs Solo
How the Triangle Tube Challenger CC105 Combi and Triangle Tube Challenger CC105 Solo compare within the Triangle Tube Challenger line, using the ratings and installation data published in the cited official sources.
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Triangle Tube Challenger CC105 Solo vs CC125 Combi
How the Triangle Tube Challenger CC105 Solo and Triangle Tube Challenger CC125 Combi compare within the Triangle Tube Challenger line, using the ratings and installation data published in the cited official sources.
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Triangle Tube Challenger CC125 Combi vs Solo
How the Triangle Tube Challenger CC125 Combi and Triangle Tube Challenger CC125 Solo compare within the Triangle Tube Challenger line, using the ratings and installation data published in the cited official sources.
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Triangle Tube Phase III SMART 100 vs SMART 20
How the Triangle Tube Phase III SMART 100 and Triangle Tube Phase III SMART 20 compare within the Triangle Tube Phase III (TR / SMART) line, using the ratings and installation data published in the cited official sources.
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Triangle Tube Phase III SMART 20 vs SMART 30
How the Triangle Tube Phase III SMART 20 and Triangle Tube Phase III SMART 30 compare within the Triangle Tube Phase III (TR / SMART) line, using the ratings and installation data published in the cited official sources.
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U.S. Boiler Company Alpine ALP105B vs ALP150B
Side-by-side comparison of the U.S. Boiler Company Alpine ALP105B and U.S. Boiler Company Alpine ALP150B from the U.S. Boiler Company Alpine line: published ratings, efficiency, physical data and the differences that separate the two.
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U.S. Boiler Company Alpine ALP150B vs ALP210B
How the U.S. Boiler Company Alpine ALP150B and U.S. Boiler Company Alpine ALP210B compare within the U.S. Boiler Company Alpine line, using the ratings and installation data published in the cited official sources.
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U.S. Boiler Company Alpine ALP210B vs ALP285B
Side-by-side comparison of the U.S. Boiler Company Alpine ALP210B and U.S. Boiler Company Alpine ALP285B from the U.S. Boiler Company Alpine line: published ratings, efficiency, physical data and the differences that separate the two.
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U.S. Boiler Company K2WT-080B vs K2WT-100B
How the U.S. Boiler Company K2WT-080B and U.S. Boiler Company K2WT-100B compare within the U.S. Boiler Company K2 line, using the ratings and installation data published in the cited official sources.
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U.S. Boiler Company K2WT-100B vs K2WT-120B
Side-by-side comparison of the U.S. Boiler Company K2WT-100B and U.S. Boiler Company K2WT-120B from the U.S. Boiler Company K2 line: published ratings, efficiency, physical data and the differences that separate the two.
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U.S. Boiler Company K2WT-120B vs K2WT-150B
How the U.S. Boiler Company K2WT-120B and U.S. Boiler Company K2WT-150B compare within the U.S. Boiler Company K2 line, using the ratings and installation data published in the cited official sources.
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U.S. Boiler Company ES2 ES23 vs ES24
How the U.S. Boiler Company ES2 ES23 and U.S. Boiler Company ES2 ES24 compare within the U.S. Boiler Company ES2 line, using the ratings and installation data published in the cited official sources.
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U.S. Boiler Company ES2 ES24 vs ES25
How the U.S. Boiler Company ES2 ES24 and U.S. Boiler Company ES2 ES25 compare within the U.S. Boiler Company ES2 line, using the ratings and installation data published in the cited official sources.
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U.S. Boiler Company ES2 ES25 vs ES26
How the U.S. Boiler Company ES2 ES25 and U.S. Boiler Company ES2 ES26 compare within the U.S. Boiler Company ES2 line, using the ratings and installation data published in the cited official sources.
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U.S. Boiler Company Independence IN3I vs IN3PVNI
Side-by-side comparison of the U.S. Boiler Company Independence IN3I and U.S. Boiler Company Independence IN3PVNI from the U.S. Boiler Company Independence line: published ratings, efficiency, physical data and the differences that separate the two.
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U.S. Boiler Company Independence IN3PVNI vs IN4I
How the U.S. Boiler Company Independence IN3PVNI and U.S. Boiler Company Independence IN4I compare within the U.S. Boiler Company Independence line, using the ratings and installation data published in the cited official sources.
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U.S. Boiler Company Independence IN4I vs IN4PVNI
Side-by-side comparison of the U.S. Boiler Company Independence IN4I and U.S. Boiler Company Independence IN4PVNI from the U.S. Boiler Company Independence line: published ratings, efficiency, physical data and the differences that separate the two.
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Utica MAC-115 vs Utica MAC-205
Side-by-side comparison of the Utica MAC-115 and Utica MAC-205 from the Utica Boilers MAC/MAH (AI condensing) line: published ratings, efficiency, physical data and the differences that separate the two.
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Utica MAC-205 vs Utica MAH-165
Side-by-side comparison of the Utica MAC-205 and Utica MAH-165 from the Utica Boilers MAC/MAH (AI condensing) line: published ratings, efficiency, physical data and the differences that separate the two.
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Utica MAH-165 vs Utica MAC-150
How the Utica MAH-165 and Utica MAC-150 compare within the Utica Boilers MAC/MAH (AI condensing) line, using the ratings and installation data published in the cited official sources.
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Utica MAC-150 vs Utica MAH-100
Side-by-side comparison of the Utica MAC-150 and Utica MAH-100 from the Utica Boilers MAC/MAH (AI condensing) line: published ratings, efficiency, physical data and the differences that separate the two.
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Utica UBSSC-050 vs Utica UBSSC-299
How the Utica UBSSC-050 and Utica UBSSC-299 compare within the Utica Boilers SSC (UBSSC-050 to UBSSC-299) line, using the ratings and installation data published in the cited official sources.
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Utica UBSSC-299 vs Utica UBSSC-075
Side-by-side comparison of the Utica UBSSC-299 and Utica UBSSC-075 from the Utica Boilers SSC (UBSSC-050 to UBSSC-299) line: published ratings, efficiency, physical data and the differences that separate the two.
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Utica UBSSC-075 vs Utica UBSSC-100
How the Utica UBSSC-075 and Utica UBSSC-100 compare within the Utica Boilers SSC (UBSSC-050 to UBSSC-299) line, using the ratings and installation data published in the cited official sources.
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Utica UBSSC-100 vs Utica UBSSC-150
How the Utica UBSSC-100 and Utica UBSSC-150 compare within the Utica Boilers SSC (UBSSC-050 to UBSSC-299) line, using the ratings and installation data published in the cited official sources.
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Utica UB90-100 (Series 4) vs Utica UB90-50 (Series 4)
Side-by-side comparison of the Utica UB90-100 (Series 4) and Utica UB90-50 (Series 4) from the Utica Boilers UB90 Series 4 (UB90-50 to UB90-100) line: published ratings, efficiency, physical data and the differences that separate the two.
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Utica UB90-50 (Series 4) vs Utica UB90-75 (Series 4)
How the Utica UB90-50 (Series 4) and Utica UB90-75 (Series 4) compare within the Utica Boilers UB90 Series 4 (UB90-50 to UB90-100) line, using the ratings and installation data published in the cited official sources.
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Utica UB90-100 (Series 4) vs Utica UB90-75 (Series 4)
How the Utica UB90-100 (Series 4) and Utica UB90-75 (Series 4) compare within the Utica Boilers UB90 Series 4 (UB90-50 to UB90-100) line, using the ratings and installation data published in the cited official sources.
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Utica UB90-125 (Series II) vs Utica UB90-150 (Series II)
Side-by-side comparison of the Utica UB90-125 (Series II) and Utica UB90-150 (Series II) from the Utica Boilers UB90-200 Series II (UB90-125 to UB90-200) line: published ratings, efficiency, physical data and the differences that separate the two.
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Utica UB90-150 (Series II) vs Utica UB90-175 (Series II)
How the Utica UB90-150 (Series II) and Utica UB90-175 (Series II) compare within the Utica Boilers UB90-200 Series II (UB90-125 to UB90-200) line, using the ratings and installation data published in the cited official sources.
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Utica UB90-175 (Series II) vs Utica UB90-200 (Series II)
How the Utica UB90-175 (Series II) and Utica UB90-200 (Series II) compare within the Utica Boilers UB90-200 Series II (UB90-125 to UB90-200) line, using the ratings and installation data published in the cited official sources.
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Utica UB90-125 (Series II) vs Utica UB90-175 (Series II)
How the Utica UB90-125 (Series II) and Utica UB90-175 (Series II) compare within the Utica Boilers UB90-200 Series II (UB90-125 to UB90-200) line, using the ratings and installation data published in the cited official sources.
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Utica MGC-8D vs Utica MGC-9D
How the Utica MGC-8D and Utica MGC-9D compare within the Utica Boilers MGC Series 4 (MGC-8D/9D) line, using the ratings and installation data published in the cited official sources.
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Utica PEG075FID vs Utica PEG112FID
Side-by-side comparison of the Utica PEG075FID and Utica PEG112FID from the Utica Boilers PEG-F (Gas Steam) line: published ratings, efficiency, physical data and the differences that separate the two.
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Utica PEG112FID vs Utica PEG150FID
Side-by-side comparison of the Utica PEG112FID and Utica PEG150FID from the Utica Boilers PEG-F (Gas Steam) line: published ratings, efficiency, physical data and the differences that separate the two.
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Utica PEG150FID vs Utica PEG187FID
Side-by-side comparison of the Utica PEG150FID and Utica PEG187FID from the Utica Boilers PEG-F (Gas Steam) line: published ratings, efficiency, physical data and the differences that separate the two.
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Utica PEG187FID vs Utica PEG225FID
How the Utica PEG187FID and Utica PEG225FID compare within the Utica Boilers PEG-F (Gas Steam) line, using the ratings and installation data published in the cited official sources.
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Utica CuB CHB-100 vs CHB-130
How the Utica CuB CHB-100 and Utica CuB CHB-130 compare within the Utica Boilers CuB Series (CCB-150 / CHB-100/130) line, using the ratings and installation data published in the cited official sources.
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Utica CuB CHB-130 vs CCB-150
How the Utica CuB CHB-130 and Utica CuB CCB-150 compare within the Utica Boilers CuB Series (CCB-150 / CHB-100/130) line, using the ratings and installation data published in the cited official sources.
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Utica CuB CCB-150 vs CHB-150
How the Utica CuB CCB-150 and Utica CuB CHB-150 compare within the Utica Boilers CuB Series (CCB-150 / CHB-100/130) line, using the ratings and installation data published in the cited official sources.
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Utica CuB CHB-100 vs CCB-150
Side-by-side comparison of the Utica CuB CHB-100 and Utica CuB CCB-150 from the Utica Boilers CuB Series (CCB-150 / CHB-100/130) line: published ratings, efficiency, physical data and the differences that separate the two.
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Viessmann Vitodens 200-W B2HE-85 vs B2HE-150
How the Viessmann Vitodens 200-W B2HE-85 and Viessmann Vitodens 200-W B2HE-150 compare within the Viessmann Vitodens 200-W (B2HE) line, using the ratings and installation data published in the cited official sources.
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Viessmann Vitocrossal 300 CU3A-94 vs CU3A-160
Side-by-side comparison of the Viessmann Vitocrossal 300 CU3A-94 and Viessmann Vitocrossal 300 CU3A-160 from the Viessmann Vitocrossal 300 (CU3A) line: published ratings, efficiency, physical data and the differences that separate the two.
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Viessmann Vitocrossal 300 CA3B 2.5 vs CA3B 3.0
Side-by-side comparison of the Viessmann Vitocrossal 300 CA3B 2.5 and Viessmann Vitocrossal 300 CA3B 3.0 from the Viessmann Vitocrossal 300 (CA3B) line: published ratings, efficiency, physical data and the differences that separate the two.
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Viessmann Vitocrossal 300 CA3B 3.0 vs CA3B 3.5
How the Viessmann Vitocrossal 300 CA3B 3.0 and Viessmann Vitocrossal 300 CA3B 3.5 compare within the Viessmann Vitocrossal 300 (CA3B) line, using the ratings and installation data published in the cited official sources.
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Viessmann Vitocrossal 300 CA3B 3.5 vs CA3B 4.0
Side-by-side comparison of the Viessmann Vitocrossal 300 CA3B 3.5 and Viessmann Vitocrossal 300 CA3B 4.0 from the Viessmann Vitocrossal 300 (CA3B) line: published ratings, efficiency, physical data and the differences that separate the two.
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Viessmann Vitocrossal 300 CA3B 4.0 vs CA3B 5.0
How the Viessmann Vitocrossal 300 CA3B 4.0 and Viessmann Vitocrossal 300 CA3B 5.0 compare within the Viessmann Vitocrossal 300 (CA3B) line, using the ratings and installation data published in the cited official sources.
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Viessmann Vitodens 200-W WB2B-26 vs WB2B-35
Side-by-side comparison of the Viessmann Vitodens 200-W WB2B-26 and Viessmann Vitodens 200-W WB2B-35 from the Viessmann Vitodens 200-W (legacy B2HA / B2HB) line: published ratings, efficiency, physical data and the differences that separate the two.
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Weil-McLain GV90+3 vs GV90+5
Side-by-side comparison of the Weil-McLain GV90+3 and Weil-McLain GV90+5 from the Weil-McLain GV90+ line: published ratings, efficiency, physical data and the differences that separate the two.
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Weil-McLain Simplicity 110-C vs Simplicity 199-C
How the Weil-McLain Simplicity 110-C and Weil-McLain Simplicity 199-C compare within the Weil-McLain Simplicity line, using the ratings and installation data published in the cited official sources.
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Weil-McLain AquaBalance AB-80C vs AB-80H
How the Weil-McLain AquaBalance AB-80C and Weil-McLain AquaBalance AB-80H compare within the Weil-McLain AquaBalance line, using the ratings and installation data published in the cited official sources.
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Weil-McLain AquaBalance AB-80H vs AB-120C
Side-by-side comparison of the Weil-McLain AquaBalance AB-80H and Weil-McLain AquaBalance AB-120C from the Weil-McLain AquaBalance line: published ratings, efficiency, physical data and the differences that separate the two.
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Weil-McLain AquaBalance AB-120C vs AB-120H
How the Weil-McLain AquaBalance AB-120C and Weil-McLain AquaBalance AB-120H compare within the Weil-McLain AquaBalance line, using the ratings and installation data published in the cited official sources.
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Weil-McLain AquaBalance AB-120H vs AB-155C
How the Weil-McLain AquaBalance AB-120H and Weil-McLain AquaBalance AB-155C compare within the Weil-McLain AquaBalance line, using the ratings and installation data published in the cited official sources.
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Weil-McLain CGa-25 vs CGa-3
Side-by-side comparison of the Weil-McLain CGa-25 and Weil-McLain CGa-3 from the Weil-McLain CGa (cast iron) line: published ratings, efficiency, physical data and the differences that separate the two.
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Weil-McLain CGa-3 vs CGa-4
How the Weil-McLain CGa-3 and Weil-McLain CGa-4 compare within the Weil-McLain CGa (cast iron) line, using the ratings and installation data published in the cited official sources.
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Weil-McLain CGa-4 vs CGa-5
How the Weil-McLain CGa-4 and Weil-McLain CGa-5 compare within the Weil-McLain CGa (cast iron) line, using the ratings and installation data published in the cited official sources.
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Weil-McLain CGa-5 vs CGa-6
How the Weil-McLain CGa-5 and Weil-McLain CGa-6 compare within the Weil-McLain CGa (cast iron) line, using the ratings and installation data published in the cited official sources.
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Weil-McLain CGi-25 vs CGi-3
Side-by-side comparison of the Weil-McLain CGi-25 and Weil-McLain CGi-3 from the Weil-McLain CGi (cast iron) line: published ratings, efficiency, physical data and the differences that separate the two.
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Weil-McLain CGi-3 vs CGi-4
How the Weil-McLain CGi-3 and Weil-McLain CGi-4 compare within the Weil-McLain CGi (cast iron) line, using the ratings and installation data published in the cited official sources.
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Weil-McLain CGi-4 vs CGi-5
How the Weil-McLain CGi-4 and Weil-McLain CGi-5 compare within the Weil-McLain CGi (cast iron) line, using the ratings and installation data published in the cited official sources.
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Weil-McLain CGi-5 vs CGi-6
How the Weil-McLain CGi-5 and Weil-McLain CGi-6 compare within the Weil-McLain CGi (cast iron) line, using the ratings and installation data published in the cited official sources.
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Weil-McLain EG-30 vs EG-35
How the Weil-McLain EG-30 and Weil-McLain EG-35 compare within the Weil-McLain EG / EG Steam line, using the ratings and installation data published in the cited official sources.
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Weil-McLain EG-35 vs EG-40
Side-by-side comparison of the Weil-McLain EG-35 and Weil-McLain EG-40 from the Weil-McLain EG / EG Steam line: published ratings, efficiency, physical data and the differences that separate the two.
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Weil-McLain EG-40 vs EG-45
How the Weil-McLain EG-40 and Weil-McLain EG-45 compare within the Weil-McLain EG / EG Steam line, using the ratings and installation data published in the cited official sources.
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Weil-McLain EG-45 vs EG-50
Side-by-side comparison of the Weil-McLain EG-45 and Weil-McLain EG-50 from the Weil-McLain EG / EG Steam line: published ratings, efficiency, physical data and the differences that separate the two.
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Weil-McLain SVF 500 vs SVF 600
How the Weil-McLain SVF 500 and Weil-McLain SVF 600 compare within the Weil-McLain SVF (Stainless Vertical Firetube) line, using the ratings and installation data published in the cited official sources.
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Weil-McLain SVF 600 vs SVF 725
Side-by-side comparison of the Weil-McLain SVF 600 and Weil-McLain SVF 725 from the Weil-McLain SVF (Stainless Vertical Firetube) line: published ratings, efficiency, physical data and the differences that separate the two.
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Weil-McLain SVF 725 vs SVF 850
How the Weil-McLain SVF 725 and Weil-McLain SVF 850 compare within the Weil-McLain SVF (Stainless Vertical Firetube) line, using the ratings and installation data published in the cited official sources.
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Weil-McLain SVF 850 vs SVF 1000
Side-by-side comparison of the Weil-McLain SVF 850 and Weil-McLain SVF 1000 from the Weil-McLain SVF (Stainless Vertical Firetube) line: published ratings, efficiency, physical data and the differences that separate the two.
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Weil-McLain SF550 vs SF750
Side-by-side comparison of the Weil-McLain SF550 and Weil-McLain SF750 from the Weil-McLain SlimFit (Commercial) line: published ratings, efficiency, physical data and the differences that separate the two.
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Weil-McLain SF750 vs SF1000
How the Weil-McLain SF750 and Weil-McLain SF1000 compare within the Weil-McLain SlimFit (Commercial) line, using the ratings and installation data published in the cited official sources.
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Weil-McLain SF1000 vs SF1500
How the Weil-McLain SF1000 and Weil-McLain SF1500 compare within the Weil-McLain SlimFit (Commercial) line, using the ratings and installation data published in the cited official sources.
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Weil-McLain SF1500 vs SF2000
Side-by-side comparison of the Weil-McLain SF1500 and Weil-McLain SF2000 from the Weil-McLain SlimFit (Commercial) line: published ratings, efficiency, physical data and the differences that separate the two.
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IBC SL 14-115 G3 vs Viessmann Vitodens 100-W B1HE-120
Side-by-side comparison of the IBC SL 14-115 G3 and Viessmann Vitodens 100-W B1HE-120: firing range, efficiency, turndown, weight and the homes each fits.
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IBC SL 20-160 G3 vs Viessmann Vitodens 100-W B1HE-150
Side-by-side comparison of the IBC SL 20-160 G3 and Viessmann Vitodens 100-W B1HE-150: input range, turndown, weight and which large-home loads each covers.
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IBC SL 30-199 G3 vs Viessmann Vitodens 100-W B1HE-199
Side-by-side comparison of the two 199 MBH-class heating-only condensing boilers from IBC and Viessmann: minimum fire, weight and large-load suitability.
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IBC VX 110 vs Viessmann Vitodens 200-W B2HE-120
Side-by-side comparison of the IBC VX 110 and Viessmann Vitodens 200-W B2HE-120: minimum fire, turndown claim, weight and the homes each fits.
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IBC VX 199 vs Viessmann Vitodens 200-W B2HE-199
Side-by-side comparison of the IBC VX 199 and Viessmann Vitodens 200-W B2HE-199: 199 MBH heating-only boilers with very different minimum fires and weights.
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IBC SL 14-115 G3 vs NTI Trinity FTVN150
Side-by-side comparison of the IBC SL 14-115 G3 and NTI Trinity FTVN150: input range, weight, connections, venting reach and the loads each covers.
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IBC SL 30-199 G3 vs NTI Trinity TFTN199
Side-by-side comparison of the IBC SL 30-199 G3 and NTI Trinity TFTN199: 199 MBH heating-only boilers with different minimum fires, venting and weight.
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IBC SFC 99-1 Superflow vs NTI Trinity FTVN110C
Side-by-side comparison of two compact wall-hung combi boilers from IBC and NTI: heating input, DHW delivery, venting and connections.
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IBC SFC 199-1 Superflow vs NTI Trinity TRX199C
Side-by-side comparison of the top SFC-1 and TRX combi models from IBC and NTI: heating ceiling, DHW delivery, venting and weight.
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IBC SL 14-115 G3 vs Lochinvar Knight WHB110
Side-by-side comparison of the IBC SL 14-115 G3 and Lochinvar Knight WHB110: input range, DOE capacity, venting reach and connections.
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IBC SL 30-199 G3 vs Lochinvar Knight WHB199
Side-by-side comparison of the IBC SL 30-199 G3 and Lochinvar Knight WHB199: identical 199 MBH class with different minimum fires and vent limits.
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IBC SFC 199-1 Superflow vs Lochinvar Noble NKC199
Side-by-side comparison of the IBC SFC 199-1 and Lochinvar Noble NKC199 combis: heating input, DHW delivery and venting trade-offs.
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Viessmann Vitodens 100-W B1HE-199 vs Navien NFB-200H
Side-by-side comparison of the Viessmann Vitodens 100-W B1HE-199 and Navien NFB-200H: 199 MBH-class heating-only boilers with different minimum fires and cabinets.
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Viessmann Vitodens 200-W B2HE-150 vs Navien NFB-175H
Side-by-side comparison of the Viessmann Vitodens 200-W B2HE-150 and Navien NFB-175H: input range, turndown claims, weight and cabinet height.
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Navien NCB-240/110H vs NTI Trinity FTVN110C
Side-by-side comparison of the Navien NCB-240/110H and NTI Trinity FTVN110C combis: heating range, DHW input versus delivery, weight and venting.
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Navien NCB-250/150H vs NTI Trinity TRX150C
Side-by-side comparison of the Navien NCB-250/150H and NTI Trinity TRX150C combis: heating ceiling, DHW rating style, weight and venting.
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Navien NFB-200H vs NTI Trinity TFTN199
Side-by-side comparison of the Navien NFB-200H and NTI Trinity TFTN199: 199 MBH-class heating-only boilers with different minimum fires and cabinets.
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Navien NCB-250/150H vs Rinnai IP150199C
Side-by-side comparison of the Navien NCB-250/150H and Rinnai IP150199C combis: 150 MBH heating class with different DHW ratings, weights and venting.
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NTI Trinity TFTN150 vs Weil-McLain ECO Tec 150-H
Side-by-side comparison of the NTI Trinity TFTN150 and Weil-McLain ECO Tec 150-H: 150 MBH heating-only condensing boilers with different connections and venting rules.
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NTI Trinity TRX120 vs Weil-McLain ECO Tec 110-H
Side-by-side comparison of the NTI Trinity TRX120 and Weil-McLain ECO Tec 110-H: 110-120 MBH heating-only boilers with different turndown claims and weights.
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Bosch Greenstar ZBR 42-3A vs Weil-McLain Ultra 155
Side-by-side comparison of the Bosch Greenstar ZBR 42-3A and Weil-McLain Ultra 155: similar output class with very different weights, venting and mounting.
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Triangle Tube Prestige Solo 155 vs Navien NFB-175H
Side-by-side comparison of the discontinued Triangle Tube Prestige Solo 155 and the Navien NFB-175H: firing range, cabinet and current availability.
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Triangle Tube Prestige Excellence 110 vs Navien NCB-240/110H
Side-by-side comparison of the discontinued Triangle Tube Prestige Excellence 110 and the Navien NCB-240/110H combis: storage versus on-demand DHW and current availability.
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Weil-McLain ECO Tec 150-H vs Lochinvar Knight WHB155
Side-by-side comparison of the Weil-McLain ECO Tec 150-H and Lochinvar Knight WHB155: same efficiency and size class with different venting and water content.
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Crown Phantom II PHTM2180H vs HTP UFT-199W
Side-by-side comparison of the Crown Phantom II PHTM2180H and HTP UFT-199W: input range, AFUE, turndown, weight and electrical requirements.
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Burnham Alpine ALP150B vs Weil-McLain ECO Tec 150-H
Side-by-side comparison of the Burnham Alpine ALP150B and Weil-McLain ECO Tec 150-H: identical 150 MBH input class with different weights and mounting options.
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